Very efficient but problem with stylesheets per page

Thanks first for this great plugin. For erasing revisions, it works like a charm.
Only problem. I use this plugin dedicated to apply some custom css to each page (https://www.ads-software.com/support/view/plugin-reviews/stylesheet-per-page)
Well, using Better Delete Revisions, i found myself with blank css for each of my page.

For info, checking the DB, stylesheet per page works with one unique record per page inside _postmeta
ex : (459, 158, ‘pss_style’, ‘Custom CSS’)