Once you are satisfied with the sound of the process, in Revoice Pro Edit menu, Copy - All Process Outputs (to transfer everything processed in Revoice) or Copy - Selected Process Output (to transfer only the process you have selected).
Keyboard shortcuts are Cmd + Shift + L or Cmd + Shift + O respectively.

In Studio One, use Paste at Original Position in the Edit menu to put the processed audio back into the Dub tracks, starting at the original time.

The name of the processed region has "APT" (in this case) before it to denote that processing has been applied. (Note that the original regions will still be there underneath the pasted processed versions, so you may need to delete them if they extend beyond the boundaries of the processed region.)

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