# Modifing Large Libraries UI Notification Issue
**URL:** https://forums.plex.tv/t/modifing-large-libraries-ui-notification-issue/904848
**Category:** Metadata & Adding Files
**Tags:** server-windows
**Created:** [February 7, 2025, 4:55pm UTC](https://forums.plex.tv/t/modifing-large-libraries-ui-notification-issue/904848 "2025-02-07T16:55:44Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@Sinsid](https://forums.plex.tv/u/Sinsid)
#### Post date: [February 7, 2025, 4:55pm UTC](https://forums.plex.tv/t/modifing-large-libraries-ui-notification-issue/904848/1 "2025-02-07T16:55:44Z")
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I have a very large library in a single location, a zfs pool. I was presently connecting to it via Samba, lets call this S: drive.
I wanted to migrate to use rclone mount / ssh. So I created a R: drive. I added the R: drive to my library. After a scan i got mostly but not all duplicates. I did it this was so I could see what a new scan was going to change. Satisified that the new metadata was about 99% the same as my old metadata I went to remove the S: drive.
The UI times out with “Your changes cound not be saved”. Which is confusing. After looking at the console however, it seems plex is litterally going media\_item by media\_item and removing them from the db which is taking longer than the UI is willing to wait. I would think the DB would get cleaned up as part of the next library scan. But it seems its doing it as soon as you save changes to a Library.
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### Author:  [@system](https://forums.plex.tv/u/system)
#### Post date: [May 8, 2025, 4:56pm UTC](https://forums.plex.tv/t/modifing-large-libraries-ui-notification-issue/904848/2 "2025-05-08T16:56:11Z")
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