valuechangelistener getting called multiple time - jsf-2

Question

I'm working on icefaces upgrade from 1.8 to 3.3 as well as jsf from 1.2 to 2.0.
I have used this link as reference for icefaces upgrade
I'm using ice:datatable in which I have column of checkbox which is grouped for single worker.Check picture which is of before upgrade.
ISSUE 1:
Now Problem faced after migration is that the valuechangelistener of ice:selectbooleancheckbox works fine when I check then uncheck the checkbox of a single worker. But when I do following steps:
Check first worker (This updates the Assigned door column ).
Then check other worker . This unchecks the previous checked worker and also unchecks currently checked worker.
To analyse if there is any issue in phase I used balus C blog to check phase of icefaces when it hits valuechangelistner . Then I found on my second check 2 or more valuechangelistner are called one for previous worker other for current worker(Sometimes twice) this all happens in same invoke application phase.
ISSUE 2:
ValueChangeListener gets called even after Clicking "OK" button or "CANCEL".
Fixed it by adding f:param in ice:commandButton and checking for the param in valuechangelistener method.
Tried:
To change all ice tags in the page to ace tags(Related to datatable i.e datable ,row and column).
Result : Same issue with ace valuechangelistener as well as distorted style. Maybe because I could not find ice:rowHeader equivalent in ace tags and also much more.
Changed only checkbox column to ace:column. Valuechangelistener worked fine but issue with "groupOn" attribute so changed it to "groupBy" and condition="group" still may be it did not work because I used ice:datatable which doesn't support it.
Then I tried to implement groupOn functionality manually. Using rowspan and rendering single checkbox for single worker . But rowspan didn't work. Also when I tried to render checkbox, its style is not exactly same as I need. Check this hattp://postimg.org/image/ih2mgoh7d/ remove 'a' from 'hattp'.
<ace:column groupBy ="#{item.workerName} + #{item.workerId}" rowspan="2"
styleClass= "alignSBChbx" >
<ice:setEventPhase events="ValueChangeEvent"
phase="INVOKE_APPLICATION">
<ice:selectBooleanCheckbox id="dwaCheckbox" value="#{item.select}"
style=" width:'#{appViewSettings.checkboxSize}';
height:'#{appViewSettings.checkboxSize}';"
valueChangeListener="#{dockWorkerAssignmentBean.doorAssignmentChange}"
partialSubmit="true" immediate="true"
disabled="#{!empty dockWorkerAssignmentBean.errorMap['dockWorkersAssignmentPopup:assignmentErrorField']}"
rendered="#{item.visible}">
<f:attribute name="workerIdSelected" value="#{item.workerId}" />
<f:attribute name="assignmentIdSelected" value="#{item.assignmentId}" />
</ice:selectBooleanCheckbox>
</ice:setEventPhase>
</ace:column>
backend
public final void doorAssignmentChange(final ValueChangeEvent event) {
System.out.println("inside door Assignment...");
final String workerIdSelected = (String) event.getComponent().getAttributes().get(
"workerIdSelected");
// unrelevant code
}
}