Hi all, if you'd prefer not to have the autofill, try removing the EINs from the table. 
To delete the data within the table, click on the drop down within the EIN field to open the table and right-click one of the entries and select 'delete'. Repeat this for each entry in the table. Once each item within the table has been removed, the table will be deleted.
NOTE: Modifications or deletions of a Table entry will not change or remove the data for client returns that contains input from the modified or deleted Table entry.
See this article for more information: Create or modify entries in the table editor in Lacerte 
Let me know if this helps. 
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