If you set the Auto Add Bundled Tracks setting to Yes, RoyaltyWorx will automatically pull through tracks linked through the bundle builder or copy tool (that use the same ISRC) & mark them as In House on the relevant Contract In. This is useful when creating In House compilations as it automates the additional work.
You can also Update All Contracts in bulk so that bundled tracks will be added to the relevant Contract In.
IMPORTANT - you should always check your Contract Ins to make sure all versions of the track are added & accounted for.