there is enough opportunity for a queen being moved out of the hive or a queen cell built into the comb being overlooked. There is no evidence that it is the queen from the original queen cell.
I'm a regular user of test frames and have a tried and trusted merhod of inspection. Test frames are always marked with drawing pins and are checked first, if no QC'c then other frames are checked for signs of Q+. I always shake the bees off frames so as not to miss early emergency QC's.
When a strong colony decides to build QC's on a test frame, providing the frame had sufficient eggs or young larvae you get many emergency QC's- not easy to overlook when inspecting a week later.
When inserting a test frame, the frame being removed has all the bees shaken back into the hive so little chance of the queen being lost.