Hi Arashmartin,
Thank you for visiting Microsoft Answers.
I would suggest you to backup the data of Really Simple Syndication (RSS) from the location C:\Users\loginname\AppData\Local\Microsoft\Feeds in any DVD and then copy the data in the same location of the user account after upgrading to the other version of Windows.
To do this, follow these steps:
1. Open C: drive, press Alt key from keyboard .
2. Click on Tool > Folder options>View tab.
3. Put a check in “show hidden files, folders and drives.
4. Click on Apply, OK.
5. Browse to the location C:\Users\loginname\AppData\Local\Microsoft\Feeds and copy the data in any DVD or external device.
Regards
Debleena S
Microsoft Answers Support Engineer
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