keyword bid update in base campaign with Trial

I am reading the document here.

https://developers.google.com/adwords/api/docs/reference/v201603/TrialService

Changes to entities of the base campaign after creating the trial will be applied to the trial asynchronously, unless the changed fields were overridden in the draft. Changes to the draft have no effect on a trial once it has been created.

My question here is whether it is possible to change keyword bid in base campaign and trial campaign , and the changes in base campaign doesn't apply to trial.

I tested the first part, and saw different bid for the keyword in base and trial, but I am not sure whether the bid update in base campaign will eventually override bid in trial.

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