Migration template of Leads_C4C

Dear colleagues,

Could you please assist with the following question:

I try to migrate Lead's data, but always appears the following error on the third step of migration (screenshot 1-Error).

The name of temlate - Sales Leads.

I propose it heppened because of this temlate is not still relevant for this system, but It is very strange because all new added fiels in the system appears directly in this template and nowhere else.

If it is really true and this (Sales Leads) template not relevant now, which one I have to use to migrate the Leads data to C4C?

Thank you in advance for your assistance.

BR,

Alexander Varfolomeev