I have not done this as part of a team. But I would think it is not critical for everyone to be using the exact same drawing. The drawings should be viewed as a

I have not done this as part of a team. But I would think it is not critical for everyone to be using the exact same drawing. The drawings should be viewed as a tool for communicating. If different people are using different drawings, but it is facilitating communication, that second piece is the important piece. At the mock up stage, I think the most important piece is hammering out effective communication protocols. Regardless of what tool you use, this will be a process. It sounds like you may be in different countries. If so, you may find that bridging the culture gap is harder than bridging the tech gap.