# Previously used filters disappeared

**URL:** https://community.mp3tag.de/t/previously-used-filters-disappeared/57141
**Category:** Support
**Created:** [April 26, 2022, 11:01pm UTC](https://community.mp3tag.de/t/previously-used-filters-disappeared/57141 "2022-04-26T23:01:27Z")
**Posts on this page:** 1
**Showing post:** 14

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### Author: ![Florian](https://community.mp3tag.de/user_avatar/community.mp3tag.de/florian/32/5759_2.png) [@Florian](https://community.mp3tag.de/u/Florian)
#### Post date: [April 28, 2022, 6:21am UTC](https://community.mp3tag.de/t/previously-used-filters-disappeared/57141/14 "2022-04-28T06:21:16Z")

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> [@ohrenkino](#):
>
> On the contrary (and this is my assumption): if you get a new data structure that assigns descriptions and favourite filters how should this be usable by older versions of the program?

> [@poster](#):
>
> I downgraded several times from version 3.14b, upgraded again and did not loose my filter expressions.

It's indeed the case, that any filters you're adding with v3.14b and beyond are not available when you downgrade to a previous installation. The latest versions are using a different data structure that is not accessible to previous versions.

What you're seeing are the pre-v3.14b filter expressions, that are still preserved to have a safe upgrade path in case something goes wrong during the beta phase.

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