Ok here is what I did:
I batch imported to the original 120 DNxHD clips, this time in 185 DNxHD but before I did that I copied the 120 DNxHD to another location just in case. I did not batch import into duplicated clips from which I created synched subclips and those duplicated (not yet synched) clips are still 120. I also relinked the subclips (that are actually made of duplicated clips) and are now 185 DNxHD.
Now I have both MXFs. All of the 185 and all of the 120. If I move the 120 to another location audio of DSLR footage goes offline. Which doesn’t bother me, but I wonder why that is so.
Also, should I as well relink the duplicated clips that are still 120 (from which I made the synched clips that are now 185) or it doesn’t even matter since synched clips are now 185?
I am sorry if I am not clear enough and thank you for your time.