Hello, sorry forgot to mention my sim is p3d v5 and simwings aerosoft LEBL
Ok, I checked your .INI file, and it has some issues. It must have been made with a *very* old version of GSX, because jetwaylogos are called with their full name, and this format hasn't used in a long while, since it's much better to store just the operator's name and have the jetway model itself know which logo model to use.
GSX is supposed to convert automatically these legacy files but, in addition to that, the file was made for P3DV4, which support custom textures while P3D V5 doesn't. Again, even in this case GSX will automatically convert .INI files that use custom textures by scanning all gates that had one, replacing them with the default texture for the airport.
When it does this, it will create a COPY of the .INI file as soon as you edit it ( so you won't lose the P3D V4 version ), with the parameter "p3d5only = 1" in the [General] section, so P3D V5 will use this one, and P3D V4 the old one. But since the p3d5only = 1 is missing from your file, it seems the two issues combined are preventing to use the .INI file at all, that's why you fix the problem momentarily, by it's not loaded, something must have gone wrong in the conversion.
What happens if you remove all .INI files for that airport and try from scratch ? Are you able to save the elevation ?