Mine is part of a package and I upgraded no problem.
Just pay attention to which upgrade you are getting.
Due to the fact that the packaged Carrack comes with a pisces that is not explicitly listed, they had to be creative with the upgrade.
So if you have a package with a base Carrack and base C8 Pisces you need to either get the upgrade to an Exploration Carrack and C8 or Exploration Carrack and C8x (exploration model Pisces)
It is possible to CCU yourself out of your Pisces if you get the wrong one.
Here are the flavors of CCU that exist:
List A
Base Carrack w/o Pisces -> Anything from B
Base Carrack w/ Base Pisces -> 2, 3, 4 or 5
Base Carrack w/ Exp. Pisces -> 3, 4 or 5 ***
Exp Carrack w/o Pisces -> 4 or 5
Exp Carrack w/ Base Pisces -> 5
*** here is the dangerous one. You can get 3 and ‘lose’ your Pisces
List B
- Base Carrack w/ Base Pisces
- Base Carrack w Exp Pisces
- Exp Carrack w/o Pisces
- Exp Carrack w/ Base Pisces
- Exp w/ Exp Pisces
The good news, even as complicated as this may seem at first glance, is that if you get the wrong one you can just CCU again to fix it, and it doesn’t cost you anything extra since the value in your pack remains the same.
So if you have something like the 2948 Exploration pack and you want to get the Exploration Carrack with the Exploration Pisces, you would want the upgrade to the Exploration Carrack with the C8X Exploration Pisces option.
If you just want to CCU the Carrack and not the Pisces (for whatever reason) then you want the CCU to Exploration Carrack with C8 Pisces, NOT the Exploration Carrack only option.
CIG certainly could have simplified this entire process but in their desire to grab more cash they had to work within the crappy CCU system that is available in their store from Turbulent. It is a mess, but not as bad as it first may seem.
Just pay attention to what you are upgrading TO and you should be fine.