Is that an admission that there is no factual history for your claims?
:)
lol...it's difficult to trace the history of sabbath keeping Christians through the traditional churches that's true. The observance of the Lord's sabbath was officially banned about 300 years after the death of Christ in the council of Laodecia. After that it becomes difficult to find sabbath keeping communities...if they were vocal they were persecuted so not much history has been written since then.