Is having an indentation where old bellybutton was normal? (Photo)

Yes, this is normal when you can't get the hole out, something that is far better than a long transverse tummy tuck scar at the same level on your abdomen. It is simple to fix by performing an in-office scar revision under local anesthesia. You got the best tightening possible and your surgeon was very forward thinking!

Thank you for your question and photos. Normally, there is a slight indentation in the upper abdominal midline, but there's no indentation below the belly button. This can be corrected under local anesthesia by fat grafting this area to smooth out the lower abdomen. Good luck.

It probably has been enough time to consider another revision of that area and try to remove some of the thinner tissue.

The linear scar represents the closing of the old belly button. The scar can be revised to help smooth it out. A little fat grafting may be recommended as well. See your surgeon for an evaluation.