I can confirm, as I've had to do exactly this for exactly your reason. 😉
From: rollei_list-bounce@xxxxxxxxxxxxx <rollei_list-bounce@xxxxxxxxxxxxx> on
behalf of CarlosMFreaza <cmfreaza@xxxxxxxxx>
Sent: 14 November 2022 19:03
To: rollei_list@xxxxxxxxxxxxx <rollei_list@xxxxxxxxxxxxx>
Subject: [rollei_list] Re: Inadvertently hit 120/220 switch
I think you could open the camera back in complete
darkness, rewind the film manually, shooting it again as new from the
beginning in the darkness or with the lens cap on the lens up to reach five
shots in the film counter and you could regularly use the camera from the frame
6 to 12.
El lun., 14 de nov. de 2022 13:10, STEPHEN DUNN
I made a mistake and pushed the little 120/220 switch. As intended it
immediately set the exposure counter to '0'.
The roll of film is 120 and it had about 4-5 exposures. I understand, if
continuing to use the roll, the gap between them will or might be affected. Is
this so or can I use the roll until it is finished? Is there a way to know
when it is completed?
Or just give up and remove the roll and start with another?