Eway bill - transport change

I have this query about e-way bill generation if someone can please help.

This is how our goods are moved.

Transporter-1 to Transporter-2 (45km)
Transporter-2 to Final Destination (500km) 

Transporter-2 is actually the main transporter & he asked me to mention
his GSTIN no in Part-A of Eway bill. He later adds vehicle # by updating Part-B
when final vehicle is assigned.

But at our end goods cannot be moved without vehicle no.
So can i put Transporter-2 GSTIN & Vehicle no of Transpporter-1
else what should be the correct way.?

Thanks