Hey @DLV76, thanks for posting your question to the Dropbox Community!
Where are you currently accessing these files from? Are they saved to your Dropbox account, or are you just accessing them from the transfer link?
If you've saved a copy to your Dropbox account, these files will not be affected, they'll still be in your account.
But if you haven't downloaded them yet, make sure to do so, before the transfer expires.
Let me know if you have any questions.