Description
I was able to reproduce the problem. Per customer,
If we modify the cloned plan's Fisheye URL field from "http://${bamboo.fisheyeServer}" to a hardcoded "http://spdfisheye.fnis.com" (bamboo.fisheyeServer = spdfisheye.fnis.com) we are able to save from the Source Repository page.
However, It doesn't even work for new created (not cloned) plans.