I'm glad you find your way here in the Community, Kefro.
You'll want to exclude the previously downloaded transactions and redownload those with the correct dates. The Exclude Selected option can be found under Batch actions from your Banking tab. Let me share the steps on how to do it below:
Go to the Banking menu on the left panel.
Choose the Banking tab.
Check the box beside the transactions you want to exclude.
Click the Batch actions drop-down and choose to Exclude Selected.