I'm finding refactoring classes that are defined in .xml context files cumbersome. I think when renaming a class Flash Builder should also check .xml and .property files for fully qualified occurrences and replace those with the new fully qualified class name. I think that this would be really useful for all of us Sring actionscript users. So i filed a feature request in Adobe Jira.
Now if we have enough votes they may add this feature.... So please vote on: