I'm attaching the document OXML containing an inline image with an intact 'descr'. The attribute is lost in conversion through Aspose to WordML.
We use AlternativeText (descr in OXML, alt in WordML) to assign a unique id to inline shapes (pictures and equations).
When rendering the OXML through Aspose (for Word 2003 clients) we have found that the AlternativeText is not preserved.
I've attached an OXML fragment and the corresponding WordML after conversion to illustrate this.