lots of stores run copper in tanks to put ich at bay could be that some fish are sensitive to it 
 
Sounds like its a acculmation issue tho , or heat related issue. If they accumulated them super fast then it could take up too 1 day and a bit to die from salinity stress 
 
Could be ich or velvet in the water as well and they went into an envirmeont that was contaminated ? 
 
or could be simple as stress of the fast move killed them 
 
I kinda think you have a right to ask what happened ? I know its not there fault but if there a fish store they should be able to keep fish alive weather its from a shipment from hawaii or from your tank shouldn't make no difference>? 
 
my 2 cents  
 
at least try to get a discount off some new ones ? 
		
	
		
		
		
		
			
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				Current tank---125 gallon mixed reef 60 gallon sump, Reef octopus nw200 skimmer, Rapid LEDs, Maxspec gyre, Mp10s, Fuge, Biweekly 20% WC,  QT everything
			 
		
		
		
		
	
		
		
	
	
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