Find the credit on the form (8582-CR?) and RIGHT CLICK then select Jump to Input.

You can use Ctrl + F to start a search > Use Rehabilitation and it will show you all the entry points 

Another hint could be in the Interactive Input Detail screen look for a BOLD section in the Credits (Maybe 34) section. 

It is possible that if you did the proforma in an early release that it messed up. 

If you disposed on the related passive activity, it would free up any carryover.