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PostgreSQL 9.1 Text Fields Are Getting Messed Up

I have a database for a client that uses TEXT fields in a postgresql database to save RTF letters with special formatting like bold or italics. The system has used a series of postgresql versions like 7.4, 8.1, and so on.

We don't update very often because postgresql is very fast and very stable. In fact, we usually only upgrade when forced to move to a new version of Ubuntu LTS or something like that where it is easier to go with the current version than it is to try to keep the old one up to date.

Anyway, we upgraded from 8.1 to 9.1 a few weeks ago (using typical pg_dump and pg_restore steps) and all of my OQ (Operational Qualification) testing indicated the data all made it over just fine, the system was working, rows were updating, and everything was working just peachy.

After a few weeks, the LETTERS table need to be updated with new letters and that is when the trouble started...

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