Import design objects - missing something

Hi

I have two files with tpt extensions XI2_0_SAP_APPL_4.6C_48_01_classic.tpt and XI2_0_SAP_APPL_4.6C_48_01.tpt to import objects corresponds to rosettanet design objects I got from SAP market place. I did place them in respository_server/import directory as mentioned in the installation guide. When tried import object from integration builder it is not recognizing it. Why?

I am running XI3.0, is that the reason it is not recognizing XI2_0 objects?

Also I did try making them as tpz file after zipping the above files and did add a metadata.properties file containing below text

transportFile=XI2_0_SAP_APPL_4.6C_48_02_classic.tpt

transportFile=XI2_0_SAP_APPL_4.6C_48_02.tpt, still it did not recognize it.

What I am missing?

help.. please..

Dhandu