I have a custom New Quote button which has some pre-defined fields when creating a quote from an opportunity. I learned it the hard way, that using such custom actions, the Opportunity Line Items will not transfer to the created Quote, so I had to investigate for solutions. I found out that I can run a Process + a Flow when a Quote is created, which will do the transfer.
The flow would get the Quote ID and Opportunity ID as parameters, get the related Opportunity and Quote records, then the Opportunity Line Items in a collection, then iterate thru them, and create a Quote Line Item for each.
Whenever I run/debug this flow, I don't get any opportunity line items copied to the quote.
Am I missing something in the assignment there? Or am I assigning values to the QutoeLineItem that are unnecessary?