> I just converted several v4 CHDs to v5 using chdman version 0.146u2 and compared the > results to the ones I converted from v4 to pre 0.146u2 v5 to 0.146u2 v5. The results > are seem to be the same. So, if someone converted to v5 before 0.146u2, their chds > may differ than someone else's chd file made with chdman 0.146u2.
but ramirez was 100% right when he stated that if you don't seed those CHD, then there is no harm in keeping the old one with different checksum: the data is the same, so MAME won't see any difference