If you delete the contents of a cell in a worksheet in a group, w

[jmfadg5]

If you delete the contents of a cell in a worksheet in a group, the contents
in the same cell in each worksheet, what will happen to cells in the other
worksheets?

[C01d]

The way a worksheet group works is such that whatever actions you perform on one sheet within the group will be reflected in other sheets.

In your case, suppose you delete the contents of Cell A6, all others sheets in the group will have the contents in cell A6 deleted as well. You can overcome this by ungrouping the sheets, making changes to individual sheets and regrouping them.