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OK, I did a little experimenting this morning, and it seems that the " ^partitionkey=%28http%2...." versions of cookies do not function to save logins or website preferences. I used the Amazon.com website for a trial. I cleared out my Amazon cookies, visited the website, signed in, and set my preference for saving my browsing history. I then opened CCleaner, and I see four cookies: After a few trials of having CCleaner save each of the individual cookies, one at a time, then cleaning the others, I found that having CCleaner save only the www.amazon.com^partitionkey+%

Because your (not partitioned) old version is globally keeping them? That is what I've been thinking. Maybe I should replace the "global" cookies I've saved with the site-specific versions? I'll have to experiment. I hope the developers can sort this out!

Thanks for the excellent explanation. Makes sense. I have never used CCleaner to clear or manage my logins or passwords in Firefox. I have always managed these directly in "Saved Logins & Passwords" under Firefox's privacy settings. CCleaner is set like this: I only use CCleaner to manage cookies in Firefox. I move any cookies I need to preserve new logins or preferences to "Cookies to Keep" before cleaning. That's why I was interested to know what to do with the " ^partitionkey=%28http% " cookies now being displayed. If I just continue to

I have noticed that since the latest Firefox update to v85.0, CCleaner now displays most cookies in a format similar to: www.xyzxyz.com^partitionkey=%28http%2cxyzxyz.com%29 where it used to just display: www.xyzxyz.com and xyzxyz.com I think this is due to a change in how Firefox 85 handles (isolates?) cookies and "supercookies"? I don't begin to understand this stuff, but previously it was easy to save login cookies in CCleaner. The cookies now displayed in the new format are duplicates of my previously saved cookies, but cleaning out the "new" ver