Using Embird Embroidery software you should be able to convert BMC embroideries to Janome JEF format.
Convert Embroidery graphic file to Janome embroidery layout.
We have found 2 software records in our database eligible for .bmc to .jef file format conversion.
Microsoft Windows software - convert bmc to jef on Windows
A popular embroidery design and printing software
Convert from bmc 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 bmc to jef. 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.
Multiplatform software - convert bmc to jef on any platform
Advanced version of the popular Embroidermodder