Inactive Project Activity ID defaults on the journal lines

Hello,

We are having an issue where after a wrong activity ID was created, and later inactivated, and a new one (correct one) was associated to the contract line (contract terms), expenses still are coming through PROJ_RESOURCE via cost collection with the wrong activity id. Looking at journal lines I see that activity ID still defaults to the wrong one (inactive). Any one knows why it doesn't matter that activity is inactive but still get processed? Thank you. Sar