Inserting a .pdf file in a Container Field Creates a .jpg file in External Storage
I am using Filemaker 12.0v3 on Mac OS X 10.8.2. I have a container field set to external, open storage and optimized for interactive content. I have thumbnails set to temporary storage.
When I insert a .pdf file into the container field (using drag and drop), an additional file, a .jpg file, with the same name is created and stored in the external storage location together with the .pdf file.
1. Why does this happen?
2. Can I prevent it from happening (assuming I want to after learning the answer to question 1), and if so, how?