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.
<a href="https://support.mozilla.org/kb/organize-your-messages-using-filters">Posta-iragazkiak</a> badituzu, adibidez, posta karpeta lokaletara eramateko, orduan erabaki behar duzu non exekutatu iragazkiak, zure beta profilean edo zure beste profilean.