Support for Retaining Shipping Methods & Custom Fields in Subscription Orders

Currently, Subi defaults subsequent subscription orders to the cheapest shipping method (e.g., pickup points), which is inconvenient for certain customers (e.g., elderly or work-from-home). Additionally, custom fields (like pickup point details) from the initial order are not carried over, leading to manual processing and delays.

Proposed Solution:

1- Copy the shipping method selected in the first order to all subsequent subscription orders.

2- Retain custom field data (e.g., pickup point information) from the initial order for future orders.

3- Make this feature optional for store admins to toggle on/off.

Benefits:

1- Reduces manual labor and errors.

2- Enhances customer experience with consistent delivery preferences.

3- Supports store scalability by automating fulfillment processes.