hi there

not entirely sure what you mean with this issue

i don't use CID 22 which is a radius bend with adjustable back but i have tried this in revit and see no issues with it connecting to CID 2

i'm not a big user of Revit and mainly in cam or Est so i'm probably not fully understanding the issue

Try a  radius bend CID 4 to see if you have the same issue which would at least narrow the problem down a bit

sorry that's all i can suggest