CC 2020 New features

Hi Peeps

I am not too sure if this is happening to anyone else.

I have updated to the new CC 2020 and so far I've noticed when I export from Indesign if it's a PDF or JPG to overide the old artwork it says "Cannot save the file because it is already open" which is obvioulsy not.

Could it maybe be the Server?

Could there be recommendation of a solution instead of me trying to resave as a different name everytime.

Help, please advise

Tnx Marisa