ME default

Hi.  Using AE beta daily on M1. It's been great.  Only issue I see which isn't much is a little lag in the timline when selecting all.  Typically to reset layers to all unopen I will hit command A then hit P twice to select position adn once to reduce everything.  in regular AE this would just happen instantaineously. On M1 beta, theres a second or 2 lag in returning all to miimized. 

Can ME beta be set to the default app when exporting from AE?  When I export from AE the legcy version of ME always opens by default.   Thanks.