ESR Object does not appear in the PO.

Hi Experts,

We are in the midst of migrating our PI 7.11 to PO 7.4. I tried to export the objects of one of the interface from the production server in PI and import the TPZ file into the development server in PO 7.4. However, the objects does not appear at all in the namespace in the PO. I have tried the below steps but it is not helping. Any idea how to solve this? Hope to get it solved. Thanks.

Steps taken:

1. Checked in the cache status overview of the ESR and it shows that it was imported successfully.
2. Refresh the SLD Data Cache and re-import it again.

Regards,

Shawn