The new direction is to do a snapshot of BBR blockchain and import that into the new codebase.
Isn't this simply known as a
hard fork in crypto currency space? Where you always have the potential problem that the old chain lives on?
Yes, but if you look at the history of other cryptocoins, the likelihood of such forks living on is quite low.
A centralized coinswap is much worse in this respect, IMHO. I'd certainly be wary of sending all my coins to a "trusted" party, and I'd seriously look into maintaining a "classic" version. In contrast, it is much easier to simply update your software and accept the fact that old clients are no longer compatible.