Thanks for joining the thread, @mcclin.
Allow me to step in and provide a little information about the bills to a dummy vendor.
When migrating from Sage to QuickBooks, all of the transactions from Sage will be transferred to QuickBooks. The possible reason why you can't delete the bills from dummy vendor is that the amount is positive amounts.
Just to clarify, are those bills have a purpose? If so, you don't need to delete them in QuickBooks instead you can just change the vendor name.
Also, can you please provide a screenshot for the transaction journal of the bill transactions. This could help us verify if the amount of those bills are positive or negative amounts. Since bills are an expense, it should be recorded as a negative amount.
Please keep me posted on how things go with this. I'm here anytime you need further help.
