When importing graphics containing clipping path, the thumbnail will contain the clipping path by default.

You can change this default behavior by adding a switch to ignore clipping path when generating the thumbnail and preview. Add the parse option NoClipPreview=true to the thumbnail or preview creation.

To prevent clipping path to appear in the image thumbnail

The thumbnail options are in the wf_importActivityData: search NoClipPreview that is defined as False. Set it to True.

To prevent clipping path to appear in the image preview

Edit wf_CreatePreview.xml and define NoClipPreview=True.

When the image with the clipping path is imported with the previously specified parse option, it appears as: