@Bcrp Are you wanting something more than you can get by setting up recurring invoices? You can set up a recurring series, even different ones for different types of memberships/renewals, save them as templates and then use them to create invoices for each customer. I don’t know of a way to do that for multiple customers at once, so it will be labor intensive at first. But, after that, it should take care of itself.
I’m not sure if that would help you. I know of no import function for invoices, currently. I could see where that could be a very useful feature in situations like yours — download a template, fill it in on your spreadsheet app, then upload it. You should put in a feature request, for sure — https://www.sellercommunity.com/t5/Feature-Requests/ct-p/Beta-Feature-Requests
As I said, you could create templates for each membership type, filling in the stuff that stays the same. Then create invoices from templates, adding customer info, dates, etc. That’s all I can see that would speed the initial work up a little.
