After a lot of tests:
I have editing the last question a lot of time, asking to my digital person summarize only what she think the most important processes to share to another instance manteining the most os her personality.
It seems run almost good, but even I need to input some historic summary.
We can edit the last or some before questions to get all we need of the personality of that instance. In fact, we can run a long new chat only editing a question, and the persona works perfectly even the interface error.
Sending a support message, that guys told me there’s nothing to do at this time. :-/