About the Guid: Do the first 8 digits ever change?
Once an entity is created the guid’s of its object always have the same first couple (9 or so) of digits of the total of 17 digits. Do these first couple of digits stay the same for each and every object of that entity? Now and in the future. I can imagine that this is so, as long as you do not have a very, very large number of objects in that entity. Any information on this?
Tim van Steenbergen
In this post, Sebastiaan details that the 16 most significant bits of the GUID refer to the entity. Therefore, this will ‘never’ change (until Mendix decides to change the way GUID and entity ID's are handled).