Unable to import the TPZ files

Hello Experts,

We are upgrading from PI7.0 to PO7.4 system.

Here we have exported some of the specific objects(Mapping objects) from PI7.0 Quality system and trying to import in PO74 Dev system.

While try to import it was giving success, but when I look at the objects they are not available.

Can someone please tell if there is any workaround for the same.

Thanks

VR