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.
template1 nodesList is IP1
service1 installed on IP1.
change template1 nodes-list to IP2
service1 host will be IP1 and not IP2.