Last week I made a model of the airport office of Inishmore with Sketchup. I exported the model as .dae-file and opened it with ModelConverterX. Al went well and the model showed up nicely. After that I opened the Attached Object Editor to Add a Light to my model. In the editor I used the AttachpointName as generated (attpt_light00) and I entered the properties for the position. The little yellow cube showed up at the right place. After that I exported the model as a copy of the original adding to the filename "with light" and closed the ModelConverterX. Two days later I re-opened the saved file (with light)to add another light to the model, but the already attached light wasn't there and the Attached Object Editor was empty. Obviously I am doing something wrong, but what..... ?? Please help !