If anyone’s interested in what I ended up doing…
I ended up still using AVID, then using Resolve as an intermediate to make an .xml that Premiere would accept nicely.
I AMA’d to the media and made autosequences – did all my syncing this way as it was much quicker.
I then exported AAF files for each sequence to import into Resolve. Resolve needed to relink to the media first but had not problem doing so.
Then export .xml out of Resolve.
Import .xml into Premiere.
Seems like a lot of steps, but the process was very smooth and to my knowledge was much quicker than doing the sync in Premiere.