Changes in the Campaigns service we wrote about earlier are now active:

• The BidPercent parameter was removed from the NetworkDefault structure.
• The LimitPercent parameter in the NetworkDefault structure is used only when the search strategy is set to HIGHEST_POSITION.
• The MAINTAIN_NETWORK_CPC setting in the Settings structure is used only when the search strategy is set to HIGHEST_POSITION and the strategy for ad networks is NETWORK_DEFAULT. 

You can find more detailed information in the documentation.