User fields are not being saved during checkout for PayPal Standard about paid-memberships-pro HOT 1 OPEN

From my limited knowledge of Paid Memberships Pro, I suspect that this is due to how the PayPal Standard gateway workflow operates. It looks to me like:

1. The pmpro_before_send_to_paypal_standard action runs the pmpro_after_checkout_save_fields function in includes/fields.php
2. This checks if that field should be saved for the level being checked out by calling:

if ( ! pmpro_check_field_for_level( $field, "profile", $user_id ) ) {
    continue;
}

3. pmpro_check_field_for_level with those arguments checks to see if the submitted field's specified levels are one that the $user_id holds.

In the case of the PayPal Standard workflow, as the pmpro_before_send_to_paypal_standard hook's name suggests, this is run before going to PayPal to checkout. Therefore, in step (3) it returns false because the field's allowed level's are not one that the current user ID holds, as the user has not yet checked out to acquire that level. Thus the field is not saved.

I have temporarily fixed this in my instance by changing the line in step 2 to:

if ( ! pmpro_check_field_for_level( $field, "default", $user_id ) ) {
    continue;

but I am unclear on other ramifications of this.

from paid-memberships-pro.