Go to your personal  Account Settings in the upper navigation bar.

Click on one of the Manage Links options on the left to get to the link you want to reuse. 

Find your link in the list. You can filter your list or use the columns to alphabetize each section. This task highlights the value of using a meaningful Purpose when creating links - so you may identify them more easily later.

Click on the link's Purpose to see the details of the link.  Copy, and reuse.

Further Reading;
Set Expiration Date on Shared Links

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