There are two causes for this:
 

1.Ensure that your shopping cart or marketplace actually supports multiple packages for a single order. Not all Order Sources allow this.
 

2.Ensure that VeraCore is reporting which items were shipped in each box. If VeraCore does not report which items shipped in each box, Extensiv Integration Manager must assume that the entire order shipped in the first box seen. This works if VeraCore reports a separate "PickPackType" element for each package. Please check with VeraCore support for how to make sure VeraCore provides this level of detail.
 

For bundles or kits, VeraCore does not provide enough information to collect accurate detailed shipping information on the offer level. Detailed tracking works best if your VeraCore Offer IDs match one to one with your Products in VeraCore.