Using Thunderbird 68.x.x … downloaded Import/Export add-on from my old Windows 7 computer and ran it. On new Windows 10 computer folders all came over, but some of the folders have lots of older emails but are missing current past few years. What could be causing this?
The support site for the ImportExportTools NG extension is https://github.com/thundernest/import-export-tools-ng/issues