Question for the Private Number Plate experts - help needed

[W4NTED]

I have bought a car privately that was registered from new on a cherished reg. The seller left the reg on the car and sold it to me with the reg. Lets say this reg is XX1.

I have my own reg on retention that I want to put on to this car. Lets say this reg is AB1.

I could make some money if I sell the reg that came with the car (XX1) as it's car specific.

Whats the best way to go about this?

If I send the DVLA my personal reg (AB1) and they then register this against this car - when I take this reg off in the future will the car revert back to the cherished plate the car was initially registered on (XX1)or will they give me a generic number plate like AB10 XYZ? If that happens do we loose the plate XX1!?

If I want to sell XX1 now do I need to first apply for this to come on to retention go to a generic AB10 XYZ plate then apply for my plate AB1 to go on to the car?

Is there any other way round - its all so complicated LOL

[Rotaree]

1. Put XX1 on retention

2. Put AB1 on the car when XX1 has gone onto retention

3. Sell XX1 on retention if required

4. Don't say 'LOL' in a serious post unless you are actually 12 years old