Celerra replication DR test - switchover?

Hi

I'm trying to put together some steps for a DR test of our Celerra implementation. We have a replication session in place from site A to site B, with exports configured at both ends. We want to run some tests at our DR site (site B), but it imperative that any data change from these tests (and there will be data change) must be discarded at the end of the test. During the test there will be no activity at site A

I was originally going to use switchover, and I've been advised by EMC Support that this is right, but I could have sworn that that's wrong because the changes will be copied back by a second switchover. Have I got it wrong? Would using a simple Stop / Start work? I've read the Using Celerra Replication V2 document which was good, but it didn't go into too much detail on this latter option, such as whether it would require a full resynchronisation. (I'm assuming that remote Celerras don't have a changed track bitmap, unlike Symmetrixes, so we'd need a full in this case?)

In SRDF-land, I would use symrdf split, do the testing, and then symrdf establish to get this effect. It's a shame that the Celerra seems to be a lot more convoluted!

I've seen similar questions on this forum, but the answers seemed to get caught up on creating snapshots, etc: is this really the only way to go about this simple (to ask) request?!

Thanks from a first-time poster.