If either member of the connection is a tubular member, it is a tubular connection. If the connection involves a CJP welded from one side without the use of backing (steel), the joint and the welders must be qualified with the T,Y, and K test depicted in Clause 4 of D1.1. The requirements have not changed in many years, so the edition invoked by the Owner isn't going to make a difference.
Best regards - Al