If any kind of lpk to dlg conversion is possible, it would be export of GIS data done using ESRI ArcGIS software.
We have not found any specific information about this export beyond the fact that both of these file types are used in ESRI software, so if you are determined that you need this particular export and for some reason struggle with it, it might be best to reach out to either ESRI community or the official support.
Updated: October 12, 2023