Not synchronizing across languages

Hi,

I'm having issue with this Date range formatter module and Internationalization (i18n), using only partial dates (days and months):

If I check the field to synchronize across language in my content type, each time that I update a date range, then the other node translations are reseted to N/A.

Having many nodes and 4 languages, this is of course not practical to disable the synchronization, but I could not find any other solution.

Thanks for help.