You can't vac seal a volatile compound.. essentially you are purging away the terps, same process as how we remove the solvents from our extracts..but without the solvent what your pulling is strictly lighter terpenes esters etc (which actually are solvents in other settings)..and this will continue until pressure equalizes with regards to the vapor pressure of said
compounds..
I said it was OK since it was straight to the freezer but really that hurts me. Sure it will be minimal, but after making extracts for yeeears ive realized everything makes a difference
Ive never personally experienced trichs freezing over. But most of the time these days I run Iso, any ice would just go into solution