Help with moving a discovered Bluetooth from Rpi5 to Shelly BT Gateway?

Hi -
Just did a clean install to a Rpi5. I have two Shelly BLU H&T units that were working on the old setup RPi3 with Shelly USB BLU Gateway. Decided to upgrade and do a clean install, no backup.

when I booted the new Rpi5, the two Shelly BLU H&T showed up and was like “oh neat!” let me add them to the Rpi5 BT and they worked correctly. (this is where i think I messed up?)

I now moved the Rpi5 back down in the basement and lost the blu signal…(Normal and why I use the “Shelly USB BLU Gateway”) That is plugged into a power supply on the 2nd floor and has wifi connected. (So the Shelly BLU H&T are close)

my issue, for the life of me… I cant move / unbind the Shelly BLU H&T from the RPI5 blue tooth to the Shelly USB BLU Gateway?

what am I missing? Please see screen shot.