GI issues after 2024R2 version 5

Testing of this GI in our sandbox prior to upgrade to 2024R2 on 12/19 went fine. We had version 5 loaded 12/30. I do not believe anyone attempted to view this GI after our initial upgrade, so don’t know if it’s an initial upgrade issue, or related to V5.
The error message when I attempt to view the GI is that the field [OwnerID] cannot be determined. Owner (I presume) is coming from PMProject.ownerID in my results grid, which appears to be valid. 
Additionally, field PMBudget.ActualAmount has a yellow warning that the user has insufficient rights or the feature has been disabled. 
Attempting to pull the GI via Velixo, just says the report is not found. 
I’ve spent a few hours doing research and do see where there have been some changes to the access rights, so I granted access … but I have admin rights, so this shouldn’t have been a problem for me, which suggests that isn’t the issue. 
I do know that some fields have been renamed/changed/removed, but this doesn’t seem to be the case here. I can’t find any information on what the required feature means, either. 
Any assistance would be appreciated - this GI is critical to my project team and now I’m going to have to somehow gather and assemble information from other sources to give them. 
I will put a ticket out on it if need be, just figured the community might have a fast and easy answer!
Thanks in advance.