We did tried importing it in DUPLICATE mode.
1. First we have imported the models in DUPLICATE mode which has got imported successfully.
2. Secondly we tried importing the projects in DUPLICATE mode, it has got imported but all the data set is showing as missing references.
Reason being A datastore internal Id in model A is changed from 1001 to 1002
So when we try to import the project in a DUPLICATE mode, it still tries to refer to the same internal id 1001 which is now 1002.
Please let me know, if I miss something here.
That is because in import mode the ids of the object being inserted gets recalculated but ids been referred by it would still be the same. The other possible option is to use smart import/export if you are on > 18.104.22.168 release. It allows to export/import all the dependents along with the object and while importing you can specify if a object to be copied or reused.