Allow to modify custom fields in address

[chladog]

Is your feature request related to a problem? Please describe.
If there is any custom field in address like "houseNumber" its currently impossible to modify it via admin.

Describe the solution you'd like
Allow to update address custom fields.

[michaelbromley]

It is possible to edit custom fields in a Customer's address from the Customer detail page.

Is this issue referring specifically to modifying an address associated with an Order via the order "Modifying" page?

[chladog]

Yes exactly, the address in the Order, e.g. change of shipping address of already placed order.