Hello,
Don't you want to consider syncing your data to the cloud and then just downloading it in the browser on newer windows version?
That way you will always have your data backed up.
Instructions for creating an account are here:
https://support.avast.com/en-ww/article/246/#macExport without using Sync account:
To export and re-import bookmarks:
1. Open "secure://bookmarks/" link in browser
2. Click the three dots in the top right browser and click Export bookmarks
3. Backup you exported file (USB, external drive etc.)
4. Install browser on new OS
5. Copy files from USB and repeat the steps 1), 2) but choose Import bookmarks and follow the guide
To export and re-import passwords:
1. Open "secure://settings/passwords" in browser
2. Click the three dots in the top right browser and click Export passwords
3. Backup you exported file (USB, external drive etc.)
4. Install browser on new OS
5. Copy files from USB and repeat the steps 1), 2) but choose Import passwords and follow the guide
Kind regards,
Josef