# Project files get corrupted
**URL:** https://discourse.nodered.org/t/project-files-get-corrupted/73822
**Category:** General
**Created:** [17 January 2023 16:50 UTC](https://discourse.nodered.org/t/project-files-get-corrupted/73822 "2023-01-17T16:50:43Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@regissg](https://discourse.nodered.org/u/regissg)
#### Post date: [17 January 2023 16:50 UTC](https://discourse.nodered.org/t/project-files-get-corrupted/73822/1 "2023-01-17T16:50:43Z")
After trying to reverse to a previous version my flow is not loading anymore and I got an error: "you need to resolve your current index first".
I could see the flow.json file in the project folder. When I try to import the flow file directly in node red I got another error as the file is mixing 2 version of the flow.
I am kind of stuck and some help will be greatly appreciated. This flow is rather complex and it controls my home heating system with the outside temperature getting close to 0°C...
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### Author:  [@regissg](https://discourse.nodered.org/u/regissg)
#### Post date: [17 January 2023 17:23 UTC](https://discourse.nodered.org/t/project-files-get-corrupted/73822/2 "2023-01-17T17:23:40Z")
I was able to regenerate the flow with a backup so my heating system is back online. But I am still interested to understand how to fix a corrupted project as well as the proper way to reverse to a previously committed version.
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### Author:  [@system](https://discourse.nodered.org/u/system)
#### Post date: [18 March 2023 17:24 UTC](https://discourse.nodered.org/t/project-files-get-corrupted/73822/3 "2023-03-18T17:24:08Z")
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