combine_probes lose 'device_channel_indices'

[chiyu1203]

I followed this doc to create a multi-shank probe.
However, the resulting two-shank probe does not has 'device_channel_indices'. Could anyone suggeset how to fix this issue?
I checked the function there was a comment at line 89 saying

# TODO deal with contact_ids/device_channel_indices

so I dont know what's the best way to approach this issue

probeinterface version 0.3.2