Are the items that appear in the invoicing tied to specific fields in the CB Field Manager?

I have no need (now) for the company and replaced the Company parameter with House Number in the xml file (edit.front.invoice.xml) along with postal code from zip code. This is a workaround for display purposes but I'm afraid it's a messy way to solve the problem, especially if down the road I do need a company field. Ideally I would rather have the address field (ie. House Number) there rather than fake it with Company. The reason I have house number separate is because the street name is a select item type with specific addresses to choose from only.

See attached image for reference.