I don't think I have a full grasp on the situation, did you move the source code of the packages or just the release repository or both?

I don't think there should be any issue. However, w.r.t. the rosdistro, you cannot have packages with the same name listed in multiple repositories, so that might require that you modify or remove the old stanzas. I think our rosdistro pull request checker should detect this, but if it doesn't complain, bring the pull request to our attention and we can check it again.