OK well here's a work around I just tried:
If you select the chords you have, then copy them, you can now transpose the song on screen down a 4th in the usual way, then paste the copied version on the end & you have a chart in 2 keys. Now copy all again but transpose the screen up a tone then paste the other at the end. Doesn't take long to cover the cycle of all 12 keys, remember there's a bit of length/arrangement setting adjustment too. A bit awkward but doable.
regards,
Pietro