# Big sync problem today... Never happened before. Please help me

**URL:** <https://forums.ankiweb.net/t/big-sync-problem-today-never-happened-before-please-help-me/41633>\
**Category:** Help\
**Created:** [February 25, 2024, 11:07pm UTC](https://forums.ankiweb.net/t/big-sync-problem-today-never-happened-before-please-help-me/41633 "2024-02-25T23:07:44Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![LeRocket](https://avatars.discourse-cdn.com/v4/letter/l/a88e4f/32.png) [@LeRocket](https://forums.ankiweb.net/u/LeRocket)\
**Post date:** [February 25, 2024, 11:07pm UTC](https://forums.ankiweb.net/t/big-sync-problem-today-never-happened-before-please-help-me/41633/1 "2024-02-25T23:07:44Z")

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(I chose the “Anki Desktop” forum, but it’s a problem that encompasses my Android version too).

This is the situation I most feared from all the years I used this app:

Anki did not register my reviews for the day. It’s awful. I would not mind studying double the time with other questions, but the dread of reviewing a second time hundreds of cards I just did earlier kills me.

1- I did my reviews on my phone

2- I synced my phone to the server.

3- I synced my computer… then I see that the numbers did not go to 0, but to where I was before starting my reviews (actually: only for my last deck, but it’s the huge one).

4- In panic I resynced my phone… but instead of overwriting the server with the good data, it took the (false) data from the server.

Is there any chance there’s a way to revert my collection to the way it was at a certain hour today (just after I synced my phone, but before I synced my Windows)?

Also… the fact that I don’t understand what happened makes me afraid it could happen any other time.

I did over 1000 days. I’m not new at this.

Thanks for reading.

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**Author:** ![Danika\_Dakika](https://sea2.discourse-cdn.com/flex002/user_avatar/forums.ankiweb.net/danika_dakika/32/17815_2.png) [@Danika\_Dakika](https://forums.ankiweb.net/u/Danika_Dakika)\
**Post date:** [February 25, 2024, 11:43pm UTC](https://forums.ankiweb.net/t/big-sync-problem-today-never-happened-before-please-help-me/41633/2 "2024-02-25T23:43:36Z")

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Yep, just restore from a backup. [Restoring an Automatic Backup (Recovering from Data Loss) - Frequently Asked Questions](https://faqs.ankiweb.net/restoring-an-automatic-backup-recovering-from-data-loss.html)

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**Author:** ![system](https://us1.discourse-cdn.com/flex002/uploads/anki2/original/1X/8f1279ababc5879d54e4838989f606cfe55af8c7.jpeg) [@system](https://forums.ankiweb.net/u/system)\
**Post date:** [March 26, 2024, 11:44pm UTC](https://forums.ankiweb.net/t/big-sync-problem-today-never-happened-before-please-help-me/41633/3 "2024-03-26T23:44:25Z")

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