Where is Transfer attribute node in 3.4? I don't find it in the list of nodes:
The Transfer Attribute has been replaced by the set of nodes.
Transfer Attribute in Nearest Surface Point mode is now Sample Nearest Surface:
Transfer Attribute in Index mode is now Sample Index and is used in combination with the Index node:
Transfer Attribute in Nearest mode is now Sample Nearest and is used in combination with the Sample Index node:
By the way, you can check the updates related to Geometry Nodes here:
Can't find the node! Which node is available in which Blender version?
...or the more detailed version with corresponding links to the documentation of the individual nodes:
(This list is constantly updating)