Participants disappear when importing chat format

I imported chat file. Transcription was OK. But speaker imformation was disappeared.

In src/main/java/mpi/eudico/server/corpora/clomimpl/chat/CHATPraser.java,

Should public String getParticipantOf() return by parsing participantLine?

How to contribute the code patch to ELAN ?

This could well be. The code for importing and exporting .chat files hasn’t been changed for several years (apart from some general refactoring), since it is advised to use the CLAN converters instead.
In general, contributing code patches to ELAN can be done by sending files to us (han.sloetjes@mpi.nl); currently there is no other way.

-Han