I maintain a small XSLT stylesheet to convert vanilla TEI P4 documents
to TEI P5, which may be of use to some of you.
I have recently updated this script, and moved it. Its
home is now http://www.tei-c.org/P5/p4top5.xsl, where
I will keep it up to date as and when enhancements are
sent to me.
If you start on a conversion project, you may like
to try this, and report failures to me, so that I can
improve it for general use.
Note that if you have a large document which you maintain
as a set of files pulled in using entity references,
you'll have to make your own arrangements
to split it back up into files.
Information Manager, Oxford University Computing Services
13 Banbury Road, Oxford OX2 6NN. Phone +44 1865 283431
OSS Watch: JISC Open Source Advisory Service