Importing old data into Metorik
Metorik works by creating a 1:1 "clone" of your store's data. So all data - orders, customers, products, subscriptions, etc. (even if it's 10 years old and you have 100,000's of orders) - will be synced over to Metorik.
But you may be wondering: What about my older data from outside of my stores? Perhaps you used a difference eCommerce system in the past or have data from other sources like a POS system.
To have that data in Metorik, all you need to do is import your old data into your current store (the one/s connected to Metorik). From there, Metorik will sync it across and you'll have reports, etc. for the data right inside of Metorik.
There are a lot of advantages to this approach. Mainly, you get to keep and own a copy of all the data in your store.
For importing data into WooCommerce, we recommend either the official Customer/Order CSV Import plugin, or WP All Import.
For importing data into Shopify, take a look at their great help doc in on it.