The test build 7.2.2 doesn't seem to have the issue (I've seen it on one server but it seems it may of been a fluke).

The only problem is the issue continues to happen after the merge, so I ran backups on one of the machines after merging and the next day had the same issue again.

Update: restarting the vmms service will start a merge.

Currently we have rebooted one host and it is currently merging the data for us where as we couldn't merge manually before... This is still a WIP and I'm not sure what the outcome will be.

We are seeing this across 18 sites currently, I've opened a ticket with no result thus far.