Custom field value is not getting updated when importing an entity

Hi all,

I have added a custom field in a table and included in the data entity extension. I have also added the same field in data entity staging table and the form. In d365 I did a full build & sync after adding this field and went to data management > Framework parameters > Refreshed the entity. However on importing the entity this custom field value is not flowing in as expected. Can anyone please help me regarding any  other steps I can follow? I have tried deleting & re adding the entity in Data entity, and also tried generating the mapping from scratch.