As Vendro (Retera) explains, latest patch (1.33) seems to ruin everything. You can't load your saves and even playing the custom campaigns. If you open the map in World Editor, random crash will occur.
Assuming your map is made on 1.32, there is a high chance you won't be able to play it normally on 1.33 due to the presence of triggers that can leak.
I really suggest backup an existing older versions of Reforged, which is 1.32. Wait until Blizzard released a small update that fixes numerous problems.