We initially used a monorepo setup but recently decided to switch to a multi-repo structure. To support this, we introduced the project variable in config.yaml as described in the SQLMesh multi-repo guide. However, adding the project variable to our existing repository is causing the following error:

Error: Duplicate key '"iceberg"."schema"."table_1"' found in UniqueKeyDict. Call dict.update(...) if this is intentional.

Is there an easy or recommended way to migrate from a monorepo to a multi-repo setup? Thank you!