So you have 2 systems, each to have automation rules but these only apply to the devices of that system so no interoperability ?
I’d suggest you setup OH to
- have “mirror” OH items of your KNX devices which address these through your KNX gateway (assuming your “Savant” can act as a GW, I don’t know that system but would assume it can do that)
- implement all your automation in OH rules
- add a zwave controller stick to the box you run OH on (Aeotec or zwave.me/UZB or RaZberry)
- migrate your ZWave devices to that controller (ex- + include them again)
Finally you can dump the Fibaro home center.
I know that’s a long journey to take but it’s worth the effort since it’ll allow for integrated, comprehensive control such as a scene to set lights AND blinds in one go. That won’t ever work well unless you migrate to have a single controller only (OH, that is).