Hello Ervin, I'm Keith and happy to help you with your question.
For the last 18 months of ownership you are deemed to be in occupation even if this is not the case. For this period Private Residence Relief, which absorbs 100% on any gain on your sole or main domestic residence, is extended. In theory this would give you until 30 October 2016, but I would be inclined to only let the 18 months to run from the date of exchange of contracts to be on the safe side. This should give you ample time to dispose of your present property.
I do hope I have helped set your mind at rest upon this matter.
Sorry, but I don't understand what you are saying.