Hai,
I’m doing migration from v3 to v4.
After v4 running all the data of single type and collection type still exists on the database except all the relation field in collection type has been removed by the system.
I try to look into the database and found all the join table from v3 has been remove and v4 seems create a new join table with different name rules then v3 was.
Is there any tips how to maintain relation data from v3 to v4 ?