I didn't have the mgmt ip issue, but did run into other errors when taking an scf file from one LTM and loading it onto another (going from virtualized LTM to physical LTM). What I ended up doing was taking the scf from the virtual (had all the configurations - nodes, pools, monitors, vservers, etc.) and taking the scf from the physical (with a baseline config - mgmt ip, vlans, self IPs, etc.) and loading into the application BeyondCompare. From there I took the items I wanted and copied over to the physical scf and was able to load without errors. Doesn't necessarily solve your problem unfortunately but you could give that a shot and see if it helps.