If you cleared the arrears back to nil, they should not be able to use the same possession warrant again. You should inform the court that on x date you cleared all arrears and that the claim for possession under that court order was satisfied.(posted 7136 days ago)However, if you did not satisfy all the arrears (but you might think you had), and there was in fact a balance due, then the suspended possession order you got in 2001 would still be valid and you could be evicted on a Warrant of Possession if further arrears arose.
You should make an urgent appointment to see the judge and apply to have the Warrant of Possession suspended on terms. You will need to make out a case at the hearing that you can afford to pay the arrears back st so much per month as well as the ongoing monthly payments due. Bear in mind the Norgan ruling.