Is it possible to delete 1 contact out of all lists?

No. Every contact is unique. Each copy in each list is separate. They might contain the same data, but they are never connected to each other.

if I have a groups column like this:
Person: A, Groups: X
Person: B, Groups: X,Y
Person: C, Groups: Y
And I import this as "MyList.csv"
This will result in two lists:
- MyList.csv X Person A Person B
- MyList.csv Y Person B Person C

Deleting Person B in list X would have no influence on Person B in list Y, because they are just two separate instances, incidentally both called “B”.

Last modified on :28/06/2018
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