Why is Indesign asking to "Save As" for an existing saved file?

[Agnes Sellgren]

When I open an exitsing file and make some changes and click "SAVE" it forces me to make a "SAVE AS" when the only thing I want is to save the existing file after making some changes. Why is this happening? Its happenimg to different files, not only one.

[vladan saveljic · Accepted solution]

It is normal behaviour when you open file with newer version of indesign that's maked with older version of indesign.

[Agnes Sellgren]

Okay, so if I go Save As on time it won´t ask me again you mean? 

[vladan saveljic]

Exactly

[rob day]

https://community.adobe.com/t5/indesign/ctrl-s-doesn-t-save-my-document-anymore-it-saves-as/td-p/115...