# \#v24

**URL:** https://hub.mender.io/tag/v24/172.md

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## [Migration from v2.4 to v2.6](https://hub.mender.io/t/migration-from-v2-4-to-v2-6/3213)

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**Author:** [@dbasner](https://hub.mender.io/u/dbasner)\
**Replies:** 8\
**Last updated:** [February 22, 2021, 1:03pm UTC](https://hub.mender.io/t/migration-from-v2-4-to-v2-6/3213 "2021-02-22T13:03:11Z")

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Hello, we recently updated our mender server from 2.4 to 2.6. Now we are facing two problems: We are missing more than half of our devices on the v2.6 UI. We cant use our field serial\_number to sort the devices anymor…