You may already be aware of this, if not - There have been some changes in the way midi is handled and referred to in the User Interface, mostly under the name “Chain Manager”.
Among them ‘layers’, now ‘chains’ are no longer directly connected with a given midi channel, and the rules and modes for midi are now more flexible on a per chain or device basis, but alas have changed as well.
I know that’s not much to go on. but I wanted to give you a quick response and some words to search on. I’ll add info if I find a good wiki or UG entry, and someone who knows more (like what RTPmidi client is) may expand as well…
Does this help (chain manager branch is now part of oram):