PackedTracks - Inconsistent version check in buffer stream load

The following discussion from !3810 (merged) should be addressed:

• @jonrob started a discussion: (+6 comments)

  @graven I think two different versions are being mixed up here ?

  Note, each packed contained acaully has two versions associated to it

  version() - This is the version the object gets via its inheritance from DataObject. For packed data, this is always set to be the same as the version in the origin unpacked data container packingVersion() - The data packing version.

  These are not the same thing, and can evolve independently.

  In the above, you compare the first version() to the values assigned to the second, the packingVersion()

  ??

assigned to @jonrob

mentioned in merge request !3810 (merged)