This is something I’ve noticed in AMR ever since I started using it. Fairly often when using BiS, AMR will suggest the exact same gear that I have equipped, but treats it as a new piece of gear (currently equipped crossed out, suggestion not dimmed). The only difference in the two gear links is that the bonus IDs are sometimes different. All stats and bonuses - or lack of bonuses - are identical.
I don’t believe it causes any errors in the overall suggestion, but it is something that is mildly annoying when trying to look for what gear I need at a glance.