@orshee

1. V7 Notes is now (12-2023) on opera web store.
2. Migrating an extension from another older Opera to the current version actually works. Addons is a file named *.crx. You have to find this crx file in the installed version of opera and copy it manually.
   Then you need to install the extension as a developer in the current version of opera (extensions menu, top right, turn on developer mode), preferably by dragging the crx file with the mouse.

@orshee Sorry, it worked before. Now I can only see crx files in a few years old version of chrome only. Nothing in the opera. I'll try to figure it out, maybe they're just renamed, zipped or something else.

@orshee 1. Windows search - *.crx
2. Or better: write opera:/about in the address bar of opera, somewhere at the bottom of the page that opens, there will be paths to opera files
Goog luck

@orshee

1. V7 Notes is now (12-2023) on opera web store.
2. Migrating an extension from another older Opera to the current version actually works. Addons is a file named *.crx. You have to find this crx file in the installed version of opera and copy it manually.
   Then you need to install the extension as a developer in the current version of opera (extensions menu, top right, turn on developer mode), preferably by dragging the crx file with the mouse.