This is a file conversion between various versions of contacts used in Microsoft Messanger / Live Messanger. It is not related to time zone conversion between MDT (Moutain Daylight Time) and CDT (Central Daylight Time).
Convert Microsoft Messenger saved contact file format to Windows Live Messenger contact list file.
We found 2 software records in the database related to .mtt to .ctt file format conversion.
Microsoft Windows software - convert mtt to ctt on Windows
An instant messaging application from Microsoft
Convert from mtt file format
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned mtt to ctt. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
Apple macOS / Mac OS X software - convert mtt to ctt on OS X
Free instant messaging client for Microsoft Live messaging service.