File from a client had a character style on a phrase making the phrase Italic. They then overrode part of the phrase with the character style back to Regular.

When a different paragraph style is applied (WITHOUT telling InDesign to remove overrides) the override within the character style goes away, reverting the overridden text back to the character style.

The problem seems to only occur when the font style of the new paragraph style being applied MATCHES the override that's applied.

I.e., overriding to Bold, then applying the a new paragraph style that is Bold, removes the override. BUT overriding to Bold then applying a paragraph style that is Regular DOES NOT remove the override.

This problem can be easily reproduced by doing a new file in InDesign and seems to go back to InDesign CS6.