You're misunderstanding. I know that I have to close 60 gates before completing the MQ. The quest is do I have to close 60 before completing "Paradise"?
From the UESP...
"
The number of random gates that can be open at any given time during the game is determined by how much of the Main Quest has been completed. In order to have the maximum number of gates open at a particular stage of the game, it is likely that you will need to explore and revisit several areas in order to trigger the random gates.
Ten random gates immediately appear after you complete http://www.uesp.net/wiki/Oblivion:Find_the_Heir (i.e., once http://www.uesp.net/wiki/Oblivion:Brother_Martin is delivered to http://www.uesp.net/wiki/Oblivion:Weynon_Priory_%28place%29). As you wander the countryside, there is a 25% chance that one of the gates listed below will appear. A maximum of 25 gates can be open at this point in the Main Quest.
When you complete http://www.uesp.net/wiki/Oblivion:Dagon_Shrine, the Oblivion crisis escalates. The probability of a gate opening increases to 50%, and the maximum number of possible gates increases to 50.
After you exit http://www.uesp.net/wiki/Oblivion:Paradise and deliver the amulet to http://www.uesp.net/wiki/Oblivion:Brother_Martin, the probability of a gate opening reduces to 25% and the maximum number of open gates reduces to 20. If you have closed more than 20 gates at this point, no more will spawn. Only the fixed gate locations will be present.
When the Main Quest is completed, the probability reduces to 0% with zero maximum gates. All open gates are closed."
I'm asking for clarification as to whether or not 'no more will spawn. Only the fixed gate locations will be present." means that it will CLOSE any other gates preventing me from getting 60 or no more will appear but ones I have 'found' will still be there. Do you have to close all 60 gates before completing Paradise - that is the question.