replace all members in the 3915traffice@veyance.com distribution list with the 3915traffic@contitech.us member only input csv

Sorry if this is a repeat as I didn't see my question listed.  I have this one liner -
Update-DistributionGroupMember -Identity 3915traffic@veyance.com -Members 3915traffic@contitech.us
to replace all members in the 3915traffice@veyance.com distribution list with the 3915traffic@contitech.us member only
Looking for some help in creating a script that will read in the other 385 distrib groups and associated member to replace from a csv file.
Thanks.

Thanks but is there a way to input the whole csv file in with all the distrib groups in - not just the -Identity of 3915traffic@veyance.com - but all the list?  like read in the whole file?
Tammy RuleO365 AdministratorAsked:
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FOXActive Directory/Exchange EngineerCommented:
Tammy,
YOu seem to already have it in control.
Create a folder named Temp on your C:drive
1.  List all the members of the 3915traffic@contitech.us by their email addresses in a .csv with a header named Users
save it as c:\temp\contitechusers.csv

Example:
Users
JohnDoe@contitech.us
ArtLinkletter@contitech.us

script:

Import-csv 'c:\temp\contitechusers.csv' | %{Update-DistributionGroupMember -Identity 3915traffic@veyance.com -member $_.Users -Confirm:$False}

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