If you have made a campaign that uses Me410 in any way:
Please do provide me with the latest version of it (if after reading this you think there might be a compatibility problem).
Why? I am about to release a completely revised Me210/410 mod, which *seriously* alters loadouts, specially Me410B (no issues for Me210). Me410D & Me410DNJ are gone as well, their "interesting" 1946 loadouts being now included in Me410B.
Thus, I have to take campaigns where they appear to adjust incompatibilities (specially where a mission selects a fixed loadout that does no longer exist). If you did your research well (regarding Me410B), chances are that nothing has to be adjusted as I certainly kept the historical loadouts
As much as I wanted to keep backwards compatibility, Me410s contained too many inconsistencies (both historical inconsistencies and logical inconsistencies) to keep the old weapon list.
Summary:Me210: full backwards compatibility. (no issue there)
Me410A: all "single bomb in bombbay" loadouts are gone, rest stays. So if you routinely skipped such "single bomb" loads on campaigns, you're ready to go.
Me410B: expect incompatibilities (adjustments in missions needed) unless you have done a good research on Me410 and avoided unused loadouts. (The new slot contains a lot of what if 1946 loads, though, to account for the Me410D & DNJ eliminated slots)