Record fields are dropped when changing and saving a value on an old entry

[gabrielsuciu10]

Which Umbraco Forms version are you using? (Please write the exact version, example: 13.4.0)

13.4.0

Which Umbraco version are you using? (Please write the exact version, example: 13.5.2)

13.6.0

Issue summary

Talked with Umbraco Support and Umbraco Developers about this issue, check specifics

When updating a value programmatically on an old entry in Umbraco Forms, from before a field on the form was changed (e.g. a field on the form has been deleted or changed to a new datatype), all values on the entry are dropped/deleted.

This can potentially result in a lot of customer data being lost.

Specifics

Had a meeting with Davis Hedgepeth (dnh@umbraco.dk) about the findings.

Davis found out that after you update the record field on an old form from before the forms fields were updated, the entry will suddenly have a lot less record fields on it.

Davis also found out that this issue only happens when the forms fields have been changed/updated or deleted after the entry has been added.

Steps to reproduce

1. Create a form
2. Create an entry
3. Remove a field on the form
4. Programmatically update a field on the entry
5. Edit the same entry, change the value of a field on the entry and save in the Umbraco Forms backoffice
6. Refresh the entry page

Expected result / actual result

I expect the values to stay as when you update an entry in backoffice.

The actual result is that all fields are empty