Routing Activity Type BUG!

Dear All,

I've created a work center and didn't put in the Activity Types in the costing tab. Then I created a routing and used this work center in (Activity Types field was empty). Afterwards, I linked the activity types in the work centers once I had them created from the Finance and went to CR02 to update the missing activity types in the operation.

When I run costing or when I create a production order, it !!!!doesn't!!!! see the activity costs. The only way that it sees it is when I go to the routing, delete the entire line! and create it again (it will automatically read the activity type from the work center now).

How can I fix this bug? is there anything I can do about this?