I believe my coworker has and he told me the same thing about export/import, but if consolidated, you need to change the database consolidations to MAS_xxx. However, I just learned a new fact this week about conversions from 2013 and prior to 2015/2016. That due to the new features of reports by rollup codes, you evidently can't export/import, rather you have to run out the reports and copy to a new template. So you may want to investigate further with Sage. I haven't yet tried this but he does a lot of SI stuff and I trust his advice.