Foreclosure Sale- Owner Deceased

[Braden C.]

Hi- I have a property that I am interested in bidding on at the county foreclosure sale. The owner was deceased at the time of filing and unknown heirs were named as a defendant. Proof of publication was filed and the summons was returned as non-served for all defendants. There was NOT however an affidavit of diligent inquiry/search for the heirs of the deceased. Is this going to be an issue when reselling the property? I believe I could do a suit-to-quiet title but would like to avoid that if necessary.