Formula to Reference Two Tabs and Producing Difference

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Occasional Contributor

Hello - Do you know of a formula that would allow referencing two tabs and produce what is different between the two tabs? Almost a reverse on removing duplicates? Thank you in advance. 

2 Replies
A file would help to better understand your problem and suggest the best possible solution for you.
What exactly is wanted ... I can not see from the translation.

Nikolino
I know I don't know anything (Socrates)

@jberlin 

It very depends on how data is organized, do tabs have same structure or they are fully different, etc. As @Nikolino suggested it's better to illustrate with sample file.