LIPS-HANDLE changing when archived ?

Hello everyone,

lately, I observed a strange effect with archived deliveries. It seems, that at the point of archiving, field LIPS-HANDLE changes for some items of the delivery - mainly for batch managed products. They all got the same value.

In this case, a unique relationship get lost between TVPOD-HANDLE-LIPS and LIPS-HANDLE

Anyone observed the same thing ? Or better .. has a solution ?