I have spent a lot of time leveling a char on tribble to help test the F2P changes and have grown attached to him.
I would feel that time was wasted if i can't keep the character.

As an additional reward, I would love to be able to transfer my tribble char to holodeck when the changes go live.
Would that be possible?
Comments
Developers have stated multiple times that you will NOT ever be able to transfer your character on Tribble over to Holodeck.
The reasons are simple.
1. its a TEST server, exploits are often found in new builds, exploited (for testing), reported(hopefully) and ultimatly fixed before the patch is pushed to the live environment.
2. Character copy... you have a method of duping items and currency, pushing that duped currency back to live would render the economy meaningless.
3. The agreement you made when you signed up for test server explains these toons can be deleted or modified by cryptic as they see fit, agreeing with that is a precondition of gaining access to Test.
Basically while its a nice idea, contaminating the live server with goods/levels/currency etc etc that were obtained in a test environment is a bad bad thing.