Add custom fields to subscription's Mass Order Entry

[Zuora-Support]

Feature Request: Currently, subscription's Mass Order Entry does not support custom fields.  Zuora should allow users to include custom fields in subscription's Mass Order.

Reference Number: DE7918

Business Need: Users may want to import custom fields to when using subscription's Mass Order Entry feature.

[johngabest]

Indeed, it would be very useful to add custom fields to the subscription import, for example to indicate the former invoice number when you're migrating a previous environment to Zuora.

[aomalley]

We really need this.  We sell in bundled packages to customers with multiple facilities who want everything billed on one invoice. In order to have the invoice split out each location subscription as a line item we needed to setup a custom field for bundle name that we mark on the subscription level by product.  It is incredibly time consuming to enter these.