Created attachment 109388 [details]
Calculate house heating dimensioning
can not move a cell with data validation.
Attachment follows. In that Sheet1.G10 is not bossible to move.
When move cell Sheet1.G10 to some other place and then save the spreadsheet and then close the program.
When reopen it again, all link´s to other Sheets are broken.
Try to move sell, save and close.
When reopen it again You can see the problem with broken link´s.!
*** This bug has been marked as a duplicate of bug 86125 ***