Conversation so far:
What is the more progressive Amish group called?
The more progressive Amish members, comprising roughly two-thirds of the group, became known by the name Amish Mennonite.
Other more traditionally minded Amish groups name is?
The more traditionally minded Amish groups became known as the Old Order Amish.
What is the amish old order called now?
In the late 1920s, the more change minded faction of the Old Order Amish broke away from the mainstream and organized under the name Beachy Amish.
What is another Amish order besides the Beachy Amish?
Another Amish order besides Beachy Amish is Old Beachy Amish.
What is the Old beachy amish faction known for?
In the 1950s, the Beachy Amish transformed into an evangelical church
Is there another order besides the old beachy order, the old order and the new order?
When did the Egli Amish withdraw?
The Egli Amish withdrew in 1858

Question: Wat did they do?
Self-contained rewrite: WHat did Egli Amish  do when they withdrew in 1858?