One more update before I go to bed, managed to Open Airport from XML....eventually. It kept throwing me an error and in the end I had to copy this part
pushBack="BOTH"/>
from the two ADE generated XML entries and replace all the other's on the gates I'd entered. Turned out I wasn't using a capital B. Now I've realised I can literally make a list of entries like this
<TaxiwayParking index="25" lat="41.257211" lon="28.737558" heading="0" radius="18.0M" type="GATE_SMALL" name= "GATE_A" number="11" pushBack="BOTH"/>
and get them in nice and fast, the areas between quotations will be empty cells in my spreadsheet to literally insert the data, copy it out to Notepad, remove all the "tabs" and save in the XML file, this should be easy now. Not sure why I can't import the data thought to an existing file.