I have transfer node. I use it with SIP refer, cold transfers. without extension set.
Previously I had a variable set which was in the format {phonenumber},{extension} and was only using the phone number hardcoded without an extension.
the tool calls in the logs however show that the the variable is still in use and extension is being set despite the UI not showing it.
I took a backup I noticed in the json that the node was still using that variable whereas the UI showed I hardcoded only the phone number. I further created a new transfer node which the same setting from UI that seemed identical . but it one gave me expected json with hardcoded phone number and other one the buggy json with dynamic variable used.