Gemtorquay

Hi there, I was needing a few questions answered, I had my 820 visa approved in November 2012 and when filling out address details I put for any 801 visa correspondence to be sent to my father in laws house thinking we would have moved before 2 years was up....turns out we didn't move but he did and we completely forgot that we had used his as the forwarding address. I have since called up immigration who weren't very helpful and they just said send in your 801 application and you new address details....When looking at the checklist online it only gives a checklist for 820/801 visas....does this mean I send in all the same forms again or do I just send the stat decs and the supporting information.....Also I am worried if there is a deadline in which it needs to be done by, I first applied on 11th November 2012, hopefully I don't only have one month or anything crazy like that? Anyone else submitted their 801 application recently who could give advise I would really appreciate it!