DO WE NEED TO UNRESERVE ALL THOSE NAMES THAT HAD BEEN SHARED WITH TEMPLE BEFORE
Welcome to the "Community.FamilySearch" Forum.
I am just another 'lowly' User/Patron ...
[ And, I happen to be a Member of the Church ... ]
Short Answer(s): 'Reshare' NO, with those previously 'Shared' With "Temple"; &., 'Yes', "Unreserve", if you can.
Here are sone Articles on the matter ...
I hope these Articles give you some, insight; and, perspective.
No. You do not "need to unreserve all those names that had been shared with the temple before."
What you need to do is get to the temple and get their ordinances done. That was the entire purpose of the policy and programming change that let you reserve those names for 90 days to begin with. If you can't do that, then yes, unreserve those names back to the temple so someone else can get the work done as was the intention and desire of the person who originally found those names, reserved them, and shared them with the temple in the first place.
If you have a list of 300 ninety day reservations, when then temples are fully open and the expiration dates kick in, you are not going to be able to complete them all before they vanish off your list and go back to general temple list anyway.
If I'm understanding what you're asking right, I think that this question could be answered by this question section: