I would argue that the nature of what you are doing hasn't changed, only the entity for which you are providing services has changed. Therefore, it's SE income. ========== I would concur. Your normal business is sufficiently close that this would be covered by it.
The only exception I would recognize is if there were a direct personal relationship (e.g. a blood relative) where you would perform the service purely on account of the relationship regardless of what business you were in.