I have compiled about 700 DEM tiles (each in its own layer) for some islands. I would like to create a virtual layerraster for each island. I grouped the DEM layers by the island name butin the layer panel. But when I try to choose input layers, the groups are not available to choose from and I am forced to choose from the original 700 layers. Is there a workaround for this or a clever way to export the layers within the group so I can load them as files?