Several months ago I put multiple days of intense work into migrating a large suite of ETL models/scripts, in preparation for a new project we have going on. At that time, I had all the models nicely modified and working for the new schema we need to match.
Today I revisited that toolbox and found that roughly half of the models will not open at all:
I can't find any way to walk-back my work and untangle this mess, so it would appear that this partially corrupted toolbox just needs to go in the trash while I start over from scratch.
A quick search reveals that this issue has plagued model builder for quite a while, through many versions. I am using Pro 3.3.5 on a Windows 11 machine.
