I'm not sure I understand your question exactly, but here's how memberships work with DLC:
- Gold membership provides access to all DLC while you are a member
- When you cancel, these items become inactive, except for anything you've purchased from the store.
- There are also exclusive items released to Std and Gold that cannot be purchased from the store
- These items become available to everyone in a future edition of Trainz.
I hope that helps.