Facebook scraper / group joiner

Hi folks basically what i have is a group with 23k members, what i want to do it crape these members then add them to a new group, what the best software to do this please. Its not for spamming i have permission to add these users to my other groups. just need a simple way of doing it ?

kind regards paul

You can make a simple scaper and joiner in Zenno poster demo version.