I took the old wireless class just before the new wireless certifications came out. The instructor told me that when using AP templates, that the template values overwrite those on the AP. Therefore, he said that if I applied a template to an AP that had, for example, a blank SSID, that such blank values would override what was configured on the AP. In other words, pushing AP templates was a one way process, and that there was no check on the AP side to identify which values are 'new' and need to be changed. I'm asking this because I'd like to create an AP template that changes ONLY the AP VLAN Group from the 'default-group' and then apply it to a subset of APs. The problem is that I'm in a production environment, and I don't want to apply this change without a full understanding of what it's going to do. For the record, I think the instructor is mis-informed. Can someone please confirm?