After migrating the firewall policy from an ASA to Firepower most of the objects in the rules were automatically grouped and named using the "DM_INLINE_NETWORK" or "DM_INLINE_SERVICE" naming convention. This difficult a lot the understanding and visibility of the policy. Is it possible to disable the grouping so the rules appear as they used to in the ASA?
FMC 6.2.3 does not support bulk push for objects. While the migration should work, it may be quite slow. I would recommend to upgrade the FMC to atleast 184.108.40.206 patch for a faster migration experience.
Your tool is the latest already. I would recommend to upgrade the FMC to 220.127.116.11 patch so that the tool can push bulk objects. That would be much faster.