https://www.clubcruceros.net/CruisingBaja/TIP.html
The folks here can help you with your unique situation.
You probably need a lawyer to help determine if the original TIP can be changed. Ensenada will likely be your easiest location outside of LaPaz
If your on your first TIP, the banjecito folks will likely have you cancel it, and then issue a new (your second TIP) with the new owners listed, and a $60USD fee.
The problem arises that you can only have three TIPS with the same owner(s).
before the boat must be physically taken out of Mexico for a period, and then re-enter the country and apply for a new TIPS.
You can only keep the boat in Mexico for 30 years as the original owner.
If the boat is
sold, its important to cancel the old TIP at a Banjercito office. Or, the new owner will have great difficulty in registering for a new TIP.
{regardless of how many times it changes hands)
I hope this helps, but I'm not a lawyer versed in Mexican laws. I've only stood in line at Banjercito many times talking with other boaters.
Via con Diaz Amigo!