The Canonical Base Property (CBP) isolates a key notion behind various descent arguments for differential and difference varieties and states the following: Over a realization of a stationary type, its canonical base is almost internal to the family of all non-locally modular minimal types.

This talk will present two properties, which already appeared in Chatzidakis's work on the CBP, regarding a transfer of internality. These properties (or rather the lack thereof) allow a structural study of the CBP in additive covers of the complex numbers.