Yes there are a number of file used within AutoPIPE generated by 3rd party vendors (ex. Microsoft). These files include exe, dll's, etc..
These outdated files contain program coding that are the foundational for AutoPIPE UI (ex. dialogs, grids, etc..). As an example, the development team wants to draw a grid so it maybe filled in with results data (ex. results grids) . They would code a reference to specific DLL using the proper syntax as required by the DLL to draw a grid. The grid is drawn and the data filled in. Now Microsoft may update this DLL to a newer version. This newer version would have the same functionality, however the syntax maybe a little different and there may also be some added features to the function. However in the end it is still just a method with which to draw a grid.
Back to the answer, yes Microsoft may no longer support the older files, but that does not mean they no longer have value. The files will continue to function as original designed, and the program will continue to function as coded until such time when the whole of the system UI is changed. It would be very costly and time consuming to update all of these foundation type files to a their newer version.
Therefore, the development team will continue to use these files unless there is a strong reason not too, ex. security threat directly related to said files, etc..
File / Model Management