This is a hint if you use the LittleNavmapOFMTheme which allows to use the open flightmaps service in LNM and see back squares on the map.
You have to adapt the text file openflightmaps.dgml for each new (monthly?) OFM release.
Replace the query="path=2203/base/latest" with query="path=2207/base/latest" or similar depending on the latest cycle. You have to do this two times in the file and clear the map cache for OFM in LNM. Best way to do this is to delete the folder openflightmaps which is located here on Windows: C:\Users\alex\AppData\Local\.marble\data\maps\earth\openflightmaps. See here for the path on other operating systems: https://www.littlenavmap.org/manuals/littlenavmap/release/2.6/en/FILES.html#disk-cache
You can also change the expire="1209600" (value in seconds - means two weeks in cache) to expire="86400" (one day in cache) or less to avoid the cache clearing.
Alex