If you have <a href="https://support.mozilla.org/kb/organize-your-messages-using-filters">mail filters</a> that, for example, move mail to local folders, then you must decide where to run filters - in your beta profile or your other profile.
Jolic maśo <a href="https://support.mozilla.org/kb/organize-your-messages-using-filters">e-mailowe filtry</a>, kótarež, na pśikład, mejlki do lokalnych zarědnikow pśesuwaju, musyśo rozsuźiś, źož se maju filtry wuwjasć – w swójom betaprofilu abo w swójom drugem profilu.