It was in 1802 that many heterodox groups, self-labeled as spiritual Christians including Doukhobors, were encouraged to migrate to the Molochna River region, around Melitopol near Ukraine's Sea of Azov coast, where they could be controlled, isolated from contaminating Orthodox Russians with their heresies, and converted to Orthodoxy.
Starting in 1839, Spiritual Christians tribes were enticed to resettle to Transcaucasia to further isolate them from Orthodox, and to establish a Russian presence in the conquered non-Russian-speaking territory.
[4] According to Gunter Schaarschmidt's survey article ("Four norms ..."), research into the Russian spoken by Canada's Doukhobors has not been extensive.
This can be considered a Ukrainian feature, and it is also attested in some Russian dialects spoken in Southern Ukraine (e.g., Nikolaev, not too far from the Doukhobors' old homeland on the Molochna).
As with other immigrant groups, the Russian speech of the Doukhobors uses English loanwords for some concepts that they had not encountered until moving to Canada.