We are a membership organization and we have separate lists per membership year (2019-2020 and 2020-2021). I have contacts that were members last year (on the 2019-2020 list) that have not renewed this year and thus are not on the 2020-2021 list. Can I compare the 2 lists and get a list of 2019-2020 members not on the 2020-2021 list? We want to contact the non-renewing members and invite them back.
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