Well I have finished my experiment of hatching fresh and refrigerated fresh eggs. My sister gave me a carton of 12 eggs that were washed and refrigerated (collected over the prior 3 days) and 5 eggs she collected that same morning. I was curious about the stories of hatching refrigerated eggs and setting washed eggs. So I chose 5 eggs from the carton and set them with the 5 fresh eggs.
I incubated them in my DYI cardboard incubator and hatched them in my Janoel12 incubator (to better control the humidity)
Here are my results: 9 eggs fully matured. 4 eggs needed assistance due to malpositioned chicks (2 fresh eggs and 2 refrigerated/washed eggs) 3 of the 4 assisted hatched chicks died within hours of hatching (but I count the 1 survivor as a win for assistance with the hatching). 2 chicks hatched with residual yolk and needed to be kept in a cup till the yolk was absorbed. One each of the fresh and refrigerated eggs, both have survived.
So I have 6 viable chicks. The one quitter was from the fresh eggs.
Washing and refrigerating eggs does not seem to affect the ability to incubate the eggs. Though these eggs were no more than 3 days old before being set in the incubator, the hatch results were the same as the fresh eggs I set in the batch.