About X-10 I had an harmony 890 and the IR-543.

I used the harmony in the ''A zone IR'' for 4 modules and I had the ''B zone RF'' for the 8 remaning modules. (to use my X-10 brand remotes)

I did'nt even try to leave the 12 modules in one zone with the IR-543. My concern is if I run my 12 modules with the IR-543 will my other RF X-10 brand remotes will still work?
I got some X-10 remotes in every rooms. (5 total)