diff --git a/toonz/sources/include/toonz/columnfan.h b/toonz/sources/include/toonz/columnfan.h
index 446eec9..c91c3ae 100644
--- a/toonz/sources/include/toonz/columnfan.h
+++ b/toonz/sources/include/toonz/columnfan.h
@@ -93,6 +93,9 @@ of column identified by \b col.
 
   void saveData(TOStream &os);
   void loadData(TIStream &is);
+
+  void rollLeftFoldedState(int index, int count);
+  void rollRightFoldedState(int index, int count);
 };
 
 #endif
diff --git a/toonz/sources/toonz/xsheetdragtool.cpp b/toonz/sources/toonz/xsheetdragtool.cpp
index 619ac12..9fd30a1 100644
--- a/toonz/sources/toonz/xsheetdragtool.cpp
+++ b/toonz/sources/toonz/xsheetdragtool.cpp
@@ -49,6 +49,7 @@
 #include "toonz/txshnoteset.h"
 #include "toutputproperties.h"
 #include "toonz/preferences.h"
+#include "toonz/columnfan.h"
 
 // TnzBase includes
 #include "tfx.h"
@@ -349,7 +350,7 @@ public:
     m_cells.resize(rowCount * colCount, TXshCell());
     int k = 0;
     for (int r = row; r < row + rowCount; r++)
-      for (int c     = col; c < col + colCount; c++)
+      for (int c = col; c < col + colCount; c++)
         m_cells[k++] = xsh->getCell(r, c);
   }
 
@@ -505,7 +506,7 @@ public:
     else {
       std::vector<TXshCell> cells(rowCount, TXshCell());
       xsh->getCells(row, col, rowCount, &cells[0]);
-      for (int r         = 0; r < rowCount; r++)
+      for (int r = 0; r < rowCount; r++)
         m_sourceCells[r] = cells[rowCount - 1 - r];
       // the "first row" becomes the bottom-most row for the upper-directional
       // smart tab
@@ -528,7 +529,7 @@ public:
     int k = i + m_offset;
     // if there is a large cycle
     if (m_count > 0) k = k % m_count;
-    k                  = m_base + (k / m_step) * m_inc;
+    k = m_base + (k / m_step) * m_inc;
     if (m_inc < 0)
       while (k < 1) k += m_base;
     return TFrameId(k);
@@ -706,7 +707,7 @@ public:
     if (row <= m_r0) row = m_r0 + 1;
     int r1 = row - 1;  // r1 e' la riga inferiore della nuova selezione
     if (r1 < m_r0) r1 = m_r0;
-    int dr            = r1 - m_r1;
+    int dr = r1 - m_r1;
     if (dr == 0) return;
     TXsheet *xsh = getViewer()->getXsheet();
     // shrink
@@ -763,8 +764,8 @@ public:
   void onCellChangeInvert(int row, int col) {
     if (m_colCount <= 0 || m_rowCount <= 0) return;
     if (row >= m_r1) row = m_r1 - 1;
-    int r0               = row + 1;
-    if (r0 > m_r1) r0    = m_r1;
+    int r0 = row + 1;
+    if (r0 > m_r1) r0 = m_r1;
 
     if (r0 < 0) r0 = 0;
 
@@ -1222,10 +1223,11 @@ public:
 
 XsheetGUI::DragTool *XsheetGUI::DragTool::makeKeyFrameHandleMoverTool(
     XsheetViewer *viewer, bool isEaseOut, int keyRow) {
-  return new KeyFrameHandleMoverTool(
-      viewer, isEaseOut ? KeyFrameHandleMoverTool::EaseOut
-                        : KeyFrameHandleMoverTool::EaseIn,
-      keyRow);
+  return new KeyFrameHandleMoverTool(viewer,
+                                     isEaseOut
+                                         ? KeyFrameHandleMoverTool::EaseOut
+                                         : KeyFrameHandleMoverTool::EaseIn,
+                                     keyRow);
 }
 
 //=============================================================================
@@ -1343,7 +1345,7 @@ public:
   }
 
   void onDrag(const CellPosition &pos) override {
-    int row          = pos.frame();
+    int row = pos.frame();
     if (row < 0) row = 0;
     onRowChange(row);
     TApp::instance()->getCurrentOnionSkin()->notifyOnionSkinMaskChanged();
@@ -1394,9 +1396,9 @@ public:
   }
 
   void onDrag(const CellPosition &pos) override {
-    int row          = pos.frame();
+    int row = pos.frame();
     if (row < 0) row = 0;
-    int lastRow      = TApp::instance()->getCurrentFrame()->getFrameIndex();
+    int lastRow = TApp::instance()->getCurrentFrame()->getFrameIndex();
     if (lastRow == row) return;
     onRowChange(row);
     refreshRowsArea();
@@ -1450,7 +1452,7 @@ public:
   }
 
   void onDrag(const CellPosition &pos) override {
-    int row          = pos.frame();
+    int row = pos.frame();
     if (row < 0) row = 0;
     onRowChange(row);
     refreshRowsArea();
@@ -1693,12 +1695,23 @@ public:
     if (col < 0)
       col = 0;
     else if (!getViewer()->orientation()->isVerticalTimeline() && col > currEnd)
-      col    = currEnd;
+      col = currEnd;
+
     int dCol = col - (m_lastCol - m_offset);
 
     // ignore if the cursor moves in the drag-starting column
     if (dCol == 0) return;
 
+    if (dCol < 0 &&
+        !xsh->getColumnFan(getViewer()->orientation())->isActive(col)) {
+      while (
+          col != 0 &&
+          !xsh->getColumnFan(getViewer()->orientation())->isActive(col - 1)) {
+        col--;
+        dCol--;
+      }
+    }
+
     int newBegin = *indices.begin() + dCol;
     int newEnd   = *indices.rbegin() + dCol;
 
@@ -2001,7 +2014,7 @@ public:
     for (i = 0; i < columnCount; i++) {
       std::vector<TFrameId> fids = m_levels[i].second;
       int size                   = fids.size();
-      if (maxRow < size) maxRow  = size;
+      if (maxRow < size) maxRow = size;
     }
     if (!isVertical) return TRect(0, 0, maxRow - 1, columnCount - 1);
 
@@ -2091,7 +2104,7 @@ public:
       m_type = OVERWRITE_CELLS;
     else
       m_valid = canChange(row, col);
-    m_curPos  = pos;
+    m_curPos = pos;
     refreshCellsArea();
   }
   void onRelease(const QDropEvent *e) override {
diff --git a/toonz/sources/toonzlib/columnfan.cpp b/toonz/sources/toonzlib/columnfan.cpp
index cefb1aa..acd4e22 100644
--- a/toonz/sources/toonzlib/columnfan.cpp
+++ b/toonz/sources/toonzlib/columnfan.cpp
@@ -178,3 +178,58 @@ void ColumnFan::loadData(TIStream &is) {
     for (j = 0; j < count; j++) deactivate(index + j);
   }
 }
+
+//-----------------------------------------------------------------------------
+
+void ColumnFan::rollLeftFoldedState(int index, int count) {
+  assert(index >= 0);
+  assert(count > 1);
+  int columnCount = m_columns.size();
+  if (columnCount <= index) return;
+  if (index + count - 1 > columnCount) count = columnCount - index + 1;
+  if (count < 2) return;
+
+  int i = index, j = index + count - 1;
+  bool tmp = isActive(i);
+
+  for (int k = i; k < j; ++k) {
+    if (isActive(k) && !isActive(k + 1))
+      deactivate(k);
+    else if (!isActive(k) && isActive(k + 1))
+      activate(k);
+  }
+  if (isActive(j) && !tmp)
+    deactivate(j);
+  else if (!isActive(j) && tmp)
+    activate(j);
+
+  update();
+}
+
+//-----------------------------------------------------------------------------
+
+void ColumnFan::rollRightFoldedState(int index, int count) {
+  assert(index >= 0);
+  assert(count > 1);
+
+  int columnCount = m_columns.size();
+  if (columnCount <= index) return;
+  if (index + count - 1 > columnCount) count = columnCount - index + 1;
+  if (count < 2) return;
+
+  int i = index, j = index + count - 1;
+  bool tmp = isActive(j);
+
+  for (int k = j; k > i; --k) {
+    if (isActive(k) && !isActive(k - 1))
+      deactivate(k);
+    else if (!isActive(k) && isActive(k - 1))
+      activate(k);
+  }
+  if (isActive(i) && !tmp)
+    deactivate(i);
+  else if (!isActive(i) && tmp)
+    activate(i);
+
+  update();
+}
diff --git a/toonz/sources/toonzlib/txsheet.cpp b/toonz/sources/toonzlib/txsheet.cpp
index e5f5b82..e5f2798 100644
--- a/toonz/sources/toonzlib/txsheet.cpp
+++ b/toonz/sources/toonzlib/txsheet.cpp
@@ -1318,6 +1318,11 @@ void TXsheet::insertColumn(int col, TXshColumn *column) {
     TFx *fx = column->getFx();
     if (fx) getFxDag()->addToXsheet(fx);
   }
+
+  for (ColumnFan &columnFan : m_imp->m_columnFans) {
+    columnFan.rollRightFoldedState(col,
+                                   m_imp->m_columnSet.getColumnCount() - col);
+  }
 }
 
 //-----------------------------------------------------------------------------
@@ -1336,6 +1341,11 @@ void TXsheet::removeColumn(int col) {
   }
   m_imp->m_columnSet.removeColumn(col);
   m_imp->m_pegTree->removeColumn(col);
+
+  for (ColumnFan &columnFan : m_imp->m_columnFans) {
+    columnFan.rollLeftFoldedState(col,
+                                  m_imp->m_columnSet.getColumnCount() - col);
+  }
 }
 
 //-----------------------------------------------------------------------------
@@ -1363,12 +1373,16 @@ void TXsheet::moveColumn(int srcIndex, int dstIndex) {
     int c1 = dstIndex;
     assert(c0 < c1);
     m_imp->m_columnSet.rollLeft(c0, c1 - c0 + 1);
+    for (ColumnFan &columnFan : m_imp->m_columnFans)
+      columnFan.rollLeftFoldedState(c0, c1 - c0 + 1);
     for (int c = c0; c < c1; ++c) m_imp->m_pegTree->swapColumns(c, c + 1);
   } else {
     int c0 = dstIndex;
     int c1 = srcIndex;
     assert(c0 < c1);
     m_imp->m_columnSet.rollRight(c0, c1 - c0 + 1);
+    for (ColumnFan &columnFan : m_imp->m_columnFans)
+      columnFan.rollRightFoldedState(c0, c1 - c0 + 1);
     for (int c = c1 - 1; c >= c0; --c) m_imp->m_pegTree->swapColumns(c, c + 1);
   }
 }