@NV 

Circling back after discussions with the Illinois Dept of Revenue.  They are not able to process federal 1120-H filers filing an IL-1120 return for the 2024 tax season electronically.  Unfortunately, that means Proseries users will have to paper file those IL returns even though the IRS is accepting the 1120-H electronically.  

We will have to update the software again to stop users from efiling the IL-1120 when it is linked to a federal 1120-H. Sorry for the confusion.