Hey Kevin,
Sorry about the delay and misunderstanding earlier.
What you could do is, to take a backup of the MDB database first.
a) install Catalog on a new node
b) install SDM secondary on a new node, and add xFlow component there
c) uninstall Catalog + xFlow on old node
d) clean up the database about the old servers by using dbcleanuputility (How the DBCleanup.exe utility works in Service Desk )
Hope this helps
_R