I'm not sure if this is expected behavior, but when entering this:

<h:inputText
value="#{memberExample.identifier}" id="referrerIdentifierField2">
     <a:support event="onblur" reRender="repeater,referrerIdentifierField2" limitToList="true"
     bypassUpdates="false" />
</h:inputText>

outside of a long running conversation it works without a hitch.  Updating the model and reRendering the necessary items.

Running inside of a long running conversation it only works correctly if I dont have it reRender itself.

To demonstrate this I have:

<h:inputText
value="#{memberExample.identifier}" id="referrerIdentifierField2">
     <a:support event="onblur" reRender="repeater,referrerIdentifierField2" limitToList="true"
     bypassUpdates="false" />
</h:inputText>

<h:inputText value="#{memberExample.identifier}" id="referrerIdentifierField">
     <a:support event="onblur" reRender="repeater" limitToList="true"
     bypassUpdates="false"/>
</h:inputText>

<h:outputText id="repeater" value="#{memberExample.communityIdentifier}"/>

In a long-running conversation and when typing into the first box, the model is not updated (and when rerendered the input box is blank after a blur and subsequent render).  If using the second box, it updates the model and renders the repeater fine.

The only difference is that the a:support tag does not try to reRender the field being submitted.

Since it works fine outside of a long-running conversation I assume there is something extra I need to do in order to reRender the form?

Another peculiar thing, I can have two fields bound to the same bean property, and have one re-render the other, the functionality only breaks on rerendering the field where the ajax call is resulting from.

In other words:

<h:inputText
value="#{memberExample.identifier}" id="referrerIdentifierField2">
     <a:support event="onblur" reRender="repeater,referrerIdentifierField2" limitToList="true"
     bypassUpdates="false" />
</h:inputText>

<h:inputText value="#{memberExample.identifier}" id="referrerIdentifierField">
     <a:support event="onblur" reRender="repeater,referrerIdentifierField2" limitToList="true"
     bypassUpdates="false"/>
</h:inputText>

<h:outputText id="repeater" value="#{memberExample.communityIdentifier}"/>

using that the first field will not update the model, but the second will.

-C