I open a file that is checked into the EPDM vault. (Not checked out)...

I click to close this file (Ive made no changes, I have not even rotated the model, Open-Close)

I get a message that says

"The following documents have been modifies" (See attachment)

I hit close, then the message comes up again, listing another part in the assemble, then again, then again......

Does anyone experience this? IS there a good reason for this? Clearly nothing has changed.