Ah, now I understand what you mean with the backup/restore. Thank you for letting me know!
Just to let you know 2.3.3 will still clear out settings if you are updating from 2.3.0 unfortunately as the way the webview/app works has changed in this version (same reasons explained in the first post above). However, if you are on 2.3.0, I suggests you turn on cloud sync first before upgrading as that should allow you to quickly restore your site data including images.
For the images, it will be fixed in 2.3.3 which will allow you to attach images now unlike 2.3.2.
Regarding the beta, I am still waiting for Google to review the changes but anticipate that will happen soon. Once approved the link above will allow you to sign up for the beta.
Thank you!