I am by no means a expert on this issue but it probably has to do with the character set used before the upgrade and after.
This impacts the way the data strings are stored in the dbase.
The older versions used character set ISO-8859-?.
The newer versions used character set utf8 .
This was a option seen only when installing the newer versions not upgrading.
When upgrading you needed to do some edits to the script.
Do a search for both terms ISO-8859 and utf8
Another search term would be non-latin characters. This s probably what you recall.
Last edited by Ruben; 04/17/2013 4:43 PM.
