Root Cause: The Purge in version 5.x would not remove some history traces in the file u_fmhs50 of the remote node.
Update to the fix version listed below or a newer version if available.
Fix Status: Released
Fix version: Dollar Universe v6.3.41 or higher - Available
Reinitialize the u_fmhs50 along with the u_fmph50 as soon as the u_fmhs50.dta grows until its maximum file size (2GB)