Have a business mailer code from a colleague who has already used it and considering using it for 75k for 5k spend vs the less attractive personal mailer offer I have for tiered 40k + 20k points.on 3k + 7k (total 10k) spend

Unlike my personal mailer codes which after being used, stop loading the application page, the business code is loading the application page with the welcome bonus details.

With the changes in Oct/Nov of 2018 when personal codes were restricted to one-time use, are there recent data points confirming that the business code could be used more than once?