BluePrint dependencies
A BluePrint dependency is a relation between an item in a child Publication and another item in a parent Publication. The child item is either shared (an identical copy of the parent item) or localized (first shared, then changed in the child Publication).
When you select to export a BluePrint Publication, the Publication's parent Publication is not exported automatically along with it. Rather, references to that parent Publication are stored as WebDAV URLs in the export file. To ensure that BluePrint dependencies are also transferred, you must export the item from the parent Publication as well.
For example, imagine you have a parent Publication called "Parent" which contains a folder "Building Blocks" with a subfolder "Components". This "Components" folder contains an item "MyComponent". You also have a child Publication called "Child" with the same folder struicture and a localized version of "MyComponent" in the same folder.
You can now only successfully transfer the localized Component Child/Building Blocks/Components/MyComponent if you also transfer Parent/Building Blocks/Components/MyComponent. And unless the dependencies of Parent/Building Blocks/Components/MyComponent are already present on the destination Content Manager, they must be transferred also.