For replacement with the new rSeries or Velos there is a special tool called journeys and F5 and I recommend using this option. For me this is better than the UCS option as it should even cover the code difference or the fact that on rSeries the config is done on a virtual tenant (like the f5 vcm quest) and not directly on the hardware.
https://community.f5.com/t5/technical-articles/welcome-to-the-f5-big-ip-migration-assistant-now-the-f5-journeys/ta-p/279673
https://www.f5.com/es_es/company/blog/migrating-your-big-ip-fleet-amid-supply-chain-challenges
https://github.com/f5devcentral/f5-journeys
Nimbostratus
