I need to run a flared girder analysis with two different beam types on the same span. I have been able to do this for a while without any issues, but now any new model I make with different beam types will give me an error when I re-open it, and all data and settings I entered into the model are cleared. Any idea how to fix this? I am using V19.02.00.33 due to project requirements, so I can't upgrade to a newer version to fix the problem. I've been able to recreate this issue multiple times, and a colleague had the same issue when trying to open the file.
One can have different beam types in different spans and not in the same span. One can have different size I Girders in the same span (as you show above).
To investigate above error please email me (Dilip.email@example.com) your LBC file.