I used feeds to add my initial content in bulk. Now I need to add a lot MORE data content, and also update the existing data. I know when I migrate my other D7 sites, importing content is going to be important.
I have made mistakes with trial-and-error feeds. Losing data out of fields because a column was forgotten, and HTML changing. I'm especially struggling to export all existing fields of a content type to work from, in terms of updating.
I'd like to know what processes other use to make sure there are no surprises. My current site is fairly straightforward with just taxonomies, but I have an ecommerce site with lots of relational fields and I'm wondering what others do.