In Byon, the deployer updates its templates-nodesList map only if some templates are missing according to the cloud's templates list and it does it during installation process.
In case the node list of a template has been changed, and the template was added again with the same name, the deployer won't update them.
scenario:
template1 nodesList is IP1
add-tempalte ../template1
install-service ../service1
service1 installed on IP1.
uninstall-service service1
remove-template template1
change template1 nodes-list to IP2
add-tempalte ../tempalte1
install-service ../service1
service1 host will be IP1 and not IP2.