When mixing by weight, VG-nic doesn't need warming up, nor is bothersome, which is yet another additional benefit of weight-based mixing.
Of course, if taken up from freezer, then it needs to become room-temp, but imho, it's not optimal to continually take up from freezer and then again refreeze... It can be done, sure, but makes much more sense to instead freeze everything except a 1 - 6 month's worth portion, used as working bottle kept in dark closet. Freeze the remainder into also 1 - 6 month appropriate bottles, unless having many liters, which then probably would need also bigger bottles for space considerations.
Of course, if taken up from freezer, then it needs to become room-temp, but imho, it's not optimal to continually take up from freezer and then again refreeze... It can be done, sure, but makes much more sense to instead freeze everything except a 1 - 6 month's worth portion, used as working bottle kept in dark closet. Freeze the remainder into also 1 - 6 month appropriate bottles, unless having many liters, which then probably would need also bigger bottles for space considerations.