Will I be able to erase the current auto generated field so it starts at "1"?
Yes, you can reset or change the status of the automated sequence in the auto generate setting through the
Sequence Status at the bottom. Enter the sequence number you want to start from and click the
Set current seq button. If you would like to view the current sequence number, click on
Get current seq.

For more information about auto generated fields, please see our documentation here.