Global warming gave you higer spring temps??

How was the sun exposure on these babies??

Hi Pino,
Misting twice a day should be too much.
How were the temps ? Were the cuttings kept under a humidity dome ? in a greenhouse ? in open air inside the house (bad one, for humidity varies too much especially with a heating device turned on)  ?

Hi jdsfrance
The cuttings once they got visible roots were moved from the heated mat humidity bin to another bin with a light and lid but no heat mat.
So the cuttings are at room temperature. 
Also kept a cup of water in this 2nd bin to provide a little humidity boost.  But I don't think the cup of water does much and thus the misting.  The R.H. inside the bin did fluctuate from 90% after I mist down to 60% if I open the lid.

Thanks

Here's an interesting experiment for you Pino. Three cuttings taken from tips at the same time and inserted into the soil inches apart. They were initially covered by clear plastic cups.
Two cups were removed soon after leaves developped a bit. One cup was not removed as no growth appeared. I started this before Christmas and that's how they looked today.
Considering equal handling and treatment, the result should have been 100% success, but it was not.
I don't know what causes this as it happens a lot to me when propagating from cuttings.
Perhaps my approach is not scientific enough where everything should be measured accurately.

In other cases I had leaves form and thought that the plant made it only to end up dying from failure to root.
The best way I found is to control humidity by leaving the cuttings in an SIP in moisture control potting mix and watering from below. It might take a long time in a 75 degrees F environment, but this way I know that I never overwater.
I would like to add that in general I do not like to move cuttings the first season after they root in order to prevent shock and hence I use larger containers with ample depth to root and prevent dehydration.
It is possible that by moving them away from the heat they were still fragile and could've gotten shocked

Thanks Sas!
You know they say 2 out of 3 ain't bad!
I would bet if you pull out the cutting that appears dead you will find either it is rotted at the bottom and should be thrown out or there is a green bud down there trying to push out and a couple roots. 
In that case it just needs to be planted higher so the bud can see the light I would use another pot since it may need more care.