I use Dropbox and/or pCloud for storing my Sailwave .BLW files and when I click the save button it saves the file open Sailwave file to the same file name. I don’t use Google drive but I would expect the same to occur if all computers using the same Google drive location.
I know Dropbox and pCloud have the ability to recover previous versions of a file. In the case of Dropbox free account the last 30 revisions. This capability has saved me on several occasions.
Having just done a quick Internet search I see Google drive also has file revisions that you can call up:
Google Drive maintains a version history of all the files in which you upload or create within the app—but only to a point. Older file versions are automatically deleted after 30 days or 100 revisions.
I hope this information is helpful.