As admin go directly to /imdashboard/upgrade
In the sitename put in the full current IM url:
https://fleetingartstudioold.indiemade.com/
Hit Connect
If connection Successful don't click any checkboxes unless they use ETSY import Attributes as Variations. Most old customers prefer Options (which is based off old IM).
Click Import.
(you can always redo these steps and it will replace everything)
Checklist:
The category menu item always comes in enabled so check the old site to see if they have one and disable it if not. Just make sure the menus match the old site. I also encourage to move the unimportant links to the footer like FAQ, Contact just so the main menu is not so busy.
I always check to see how they crop their images. If their products are different ratios, landscape, portrait and even squares I always choose a masonry layout like Glaze, Ochre or Surreal. And turn off all cropping except for the product detail thumbnails as those look jumbled if they arent' cropped. I noticed that many IM customers have different sized photos so they love the masonry layouts!
Make sure the correct Homepage is selected based on their old site that is not automatic.
The sitewide messaging colors don't come over and those can be reset.
I typically will choose the product design style: Slideshow with vertical thumbs. However The full two column looks pretty good but you need to save the store design page or the thumbnails look off.
Payment Providers:
Encourage them or help setup PayPal Payments, I think Stripe migrates over? But they have to do Square themselves.