Trying to edit a Scheduled event synced to Google Calendar

Ok. So I am having clients book events, via Acquity.

I then synced up Acquity to update our Google Calendar. Cool.

But I am trying to edit the GCal with specific zoom links, invites and attachments. I updated, saved the calendar and all participants were updated. So I thought.

I just checked the Gcal event and it appears to have reverted to the original Squarespace /Acquity booking, YET the attachments I included in the Gcal saved. 

re: can the GCal synced calendars not be edited? Do you need to edit the Acquity event? If so, I am not able to do this. re: I am trying to edit the name of the event and the Zoom link

Thanks