a0d929ca_WSRP_v2_0_Specification__Statement_text
[#] CS077 [Section] 5.4.3 [Statement text] 
If the Producer clones the Portlet, processing attempts to modify persistent state on the new Portlet SHOULD proceed as if the Consumer had specified "readWrite" for portletState.
WSRP v2.0 Specification
Statement text