I've created some spreadsheets that others use. The headings of the spreadsheets are divided up with colors. However after I've created these and saved them formatted as I like, some of these cells are changing automatically after the other users open them up.
I've read online there may have been custom formatting done originally. So I've gone in and deleted all of the "custom" formatting available. If then changed the column headings back to the formatting I prefer. But again, as the user is opening it the next day, these handful of column heading go back to a white background with a change in font and font size.
Any ideas what could cause this? More importantly, how do I fix it?
In advance, thanks for your help.