Excel object converts to image

[Lumen]

Hi,

I've a really odd problem, in a word document, users can input formatted
excel objects via a custom made toolbar. The user inserts text in de excel
object and closes it, suddenly when he want's to edit the object and clicks
it to open it, it is converted to an image, no object properties are
available anymore. Word popsup a message that the object is corrupted or non
exists.

The objects where made in word and converted to an autotext fragment; this
was than imported in the .dot file, so that every user who makes a new file
can use this autotext fragment.

Does anyone have a idea about this?

Thanks