Developer Docs - Developer Codex - General Rules

Field names in the Rock.Data. MigrationHelper methods should not be changed. A new method should be created with the correct field names and the method with the old field names should be deprecated, and any calls to the deprecated method should be wrapped with #pragma warning disable 0618 and #pragma warning restore 0618 compiler directives.

Follow the process below if there is a migration with an error and a fix is needed. The process changes a bit depending on when the fix is needed. This is because some customers are running against the pre-alpha-release branch.