so far, Ula modules have not implemented global save and recall. It's a pretty simple addition.
On the right, an Ula module has one additional router object to catch the preset recall and save signals. It must be before the SEL object, or the SEL object creates an error when it receives letters instead of numbers. So the additional router object must filter out all other messages with a letter prefix before they reach the SEL object.
For recalls, the preset object simpy expects an integer, so the router chain strips the 'R r' prefix and simply sends the subpatcher preset object an integer. For saves, the preset object expects an 's' prefix, which is why there is an additional 's' in the prefix for save messages.