This AFCAD for Aerosoft EDDK 1.0.6 only contains a few changes in form of a few cargo parkings being extended from 33 to 36 meters, as GSX is not happy using 33 meter gates for (PMDG) 747's. Trying to invoke GSX with a 747 at these gates, you would otherwise simply be told the gate is not large enough (extending the gates to 36 meters solves this issue).
The cargo parkings on the southern side of the cargo buildings are fairly close, so I have left these unchanged. Hence I've only enlarged the cargo parkings on the northern side of the cargo buildings as theses were spaced further apart, hence would not overlap when enlarged. These are parkings that were enlarged from 33 meter to 36 meter: E9, E12, E15, E17, E21, E23, E31, E33, E35, E41, E43, E45, F21, F23, F26, F31.
To install this changed AFCAD file navigate to the folder where you have the Aerosoft EDDK scenery installed (e.g. "C:\Program Files (x86)\aerosoft\Cologne-Bonn Professional\Scenery"). In this folder rename the file "EDDK_ADEP4_ADE.bgl" into "EDDK_ADEP4_ADE.org" so you have a copy of the original AFCAD in case you would want to revert to it. Next copy the "EDDK_ADEP4_ADE.bgl" bundled with this readme into the same folder and you are ready to go.
If you run with Flightplan Visulizer, or other software that is using the output of MakeRunways (by Peter Dowson) you should run MakeRunways after having copied the new file, to update its output files so these 3rd party programs will know about the enlarged gates.