Hi Thai
Just a quick note regarding the video:
I have watched the video. ( https://www.youtube.com/watch?v=cqd0QWF9b4s )
This appears to use a built in tool. So it is not a VBA solution. I am not familiar with that tool.
Using that would be a completely different approach. I have no experience with this tool
Alan

P.S:
I do note that the food products in the example from that video appear to be unique in the lists. The food products in that example would correspond to your Ref/Designator ( Nu Torque , Blu Origin , Jet Blue21 …..etc.. ). If your Ref/Designator are unique, then that would help answer the question as to how to distinguish between
__”New: ” data
rather than
__Changed ( “ < > “ ) data
or
__Missing:

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