I deployed a new RecordType to an Opportunity (where other RecordTypes/Sales Processes already existed). I notice that my RecordType, when selected on a new Opportunity, returns bad data for my Stage Picklist (it shows stages that are not any one Sales Process). When I try to edit the RecordType's Sales Process for testing, I get the following error on the RecordType Label:
Duplicate Values Not Allowed
I definitely don't have any other Record Types of the same name, and I tried changing the Label to a variety of random words just to verify that nothing worked. I also tried to make a new RecordType based on the previous failing one (as well as trying RecordTypes already existing in the system), and it had the same issues after the initial save. It seems like editing anything except the Sales Process meant the RecordType saved fine.
I only found one similar (unanswered) question about this on the internet (http://boards.developerforce.com/t5/General-Development/Duplicate-values-not-allowed-with-Solutions/td-p/390493), so I'm curious if anyone else has run into it (not sure if it's an issue with deploying RecordTypes via the ANT Migration Tool?).
EDIT: I've filed a case with Salesforce in case this is a functionality issue.