Hi Chethna,
I'd rather not rewrite the whole transformation for you, but as an example, to link your first two rules together, you would:
1) Create a trace class (e.g. Model2TS) for storing links between Model and TestSuite objects, with an attribute for each (say, 'm' and 'ts')
2) add this line to the end of Model_2_TestSuite: LINKING Model2TS WITH m=model, ts=testSuite
3) remove the EXTENDS line from Interaction_2_TestCase
4) add this line after the WHERE line in Interaction_2_TestCase: AND Model2TS LINKS m=model, ts=testSuite
You'd need a similar process for linking other rules.
Jim.