I am planning to migrate
Magento V-1.9 to V-2.1 with following steps.
Migration is planned as follows.
Looking for an expert advice:
Step 1: Migrate all Existing Data (Orders, Customers, Settings) to 2.1
Step 2: Start Installing Missing Themes and Extension. Configure it accordingly.
Step 3: Do the Delta Migration of Orders/Customers/Products.
Is there anything which can go wrong during delta migration?
I have gone through this advice: Best plan about delta migration
My major concern is, new theme installation should not break the delta migration.