Another scenery goes over mine

Hi everyone,

I build some sceneries with ADE & Sketchup + MCX. Today I realized that when I use an other add-on (France VFR photoreal, for exemple), objects of this scenery stand over my objects. Mesh are also modified according this other scenery, even if I flatten the terrrain in ADE.

The autogen suppression works great but not when another scenery is activated under mine. I also tried the "Exclude General - Everything" option on ADE, but it doesn't works.

Priority is 1 in the scenery library, so I really have no idea of what to do. Is there any solution to "disable" all sceneries under mine, according to area priorities ? Thank you !

scenery sup.JPG