Ahh yes! That makes perfect sense @nebulon ... and I feel rather silly for not taking that into consideration. It should have been the first place that I looked - because indeed the subdomains rocket-chat, and mastodon were pointing to the old server still. Therefore, there is nothing more to be assessed or figured out here, because you have helped me to solve the problem. I am taking the old server offline, and setting up the apps within the new host environment - as it seems this was much ado about nothing!
I
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