I've run into a pretty significant limitation with Portal and am wondering what people are doing to try and work around this problem.
When setting up a collaboration between a Portal and an AGOL, it sounds like you are only allowed to have one of these setup at a time. The problem is that we have multiple clients who use AGOL and need to share data out to them from our Portal. With only one allowed at a time, we can't work with multiple clients at a time in the AGOL / Portal environment so have to default to more basic practices like sharing database files back and forth (not idea!).