MX Export to AutoCAD

Good morning all,

I'm trying to export long sections from MX to AutoCAD but I'm getting
inconsistent results. If I export a multi-paged long section, all the texts are
mtext but when I export a single page long section, all the text are plain text.
I prefer to have all the texts exported from multi-paged long sections as plain
text. Does anyone know how to do this. Thanks.

Long sections are created using input files which worked before I upgraded to
the latest version of MX.

Bentley MXROAD V8i (SELECT series 2) Build Number: 08.11.07.427
Windows 7 Enterprise Service Pack 1
AutoCAD 2010

Regards,
Boyd