Aspose Words for Java (tested v16.11.0) cannot read the following RTF file.
"com.aspose.words.FileCorruptedException: The document appears to be corrupted and cannot be loaded."
We don’t know how this file was created, but it seems that there is an invalid footnote on a table cell (and not a paragraph). MsWord 2010 seems to keep this footnote while saving to RTF. However it is lost when saved to DOCX.
I suggest that such invalid footnotes are ignored, like MsWord does when saving to DOCX.