# Roll back import as corrupted data **URL:** \ **Category:** CRM\ **Tags:** starter\ **Created:** [February 15, 2021, 6:17am UTC](https://community.hubspot.com/t/roll-back-import-as-corrupted-data/31772 "2021-02-15T06:17:38Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![GElovaris](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/gelovaris/32/64675_2.png) [@GElovaris](https://community.hubspot.com/u/GElovaris)\ **Post date:** [February 15, 2021, 6:17am UTC](https://community.hubspot.com/t/roll-back-import-as-corrupted-data/31772/1 "2021-02-15T06:17:38Z")
Hi, I imported a list and overwrote email, mobile, company data. If I delete the contacts will it delete the historical data etc? ---
**Author:** ![karstenkoehler](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/karstenkoehler/32/68554_2.png) [@karstenkoehler](https://community.hubspot.com/u/karstenkoehler)\ **Post date:** [February 15, 2021, 6:34am UTC](https://community.hubspot.com/t/roll-back-import-as-corrupted-data/31772/2 "2021-02-15T06:34:11Z")
Hi @GElovaris, Yes, if you delete the contacts, you will not only delete the recent updates to these records but the entire record. @jleow has posted a great tutorial on how to revert property changes by importing historical property values. You can check it out here: [https://community.hubspot.com/t5/Tips-Tricks-Best-Practices/Reverting-Bulk-Property-Changes-by-Importing-Historical-Property/td-p/332929](https://community.hubspot.com/t5/Tips-Tricks-Best-Practices/Reverting-Bulk-Property-Changes-by-Importing-Historical-Property/td-p/332929) Hope this helps! ---
**Author:** ![AMartin3](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/amartin3/32/26012_2.png) [@AMartin3](https://community.hubspot.com/u/AMartin3)\ **Post date:** [October 4, 2021, 4:59pm UTC](https://community.hubspot.com/t/roll-back-import-as-corrupted-data/31772/3 "2021-10-04T16:59:26Z")
This is genius. Thank you.