In general, when you want to save the data from a table produced by a node, you should connect a 'writer' type of node to save the data to a file (or database, etc.). The I/O node category has a number of writer nodes (e.g. CSV writer). Also, if you're writing XML to files, check out the XML Writer node (I think you need to download the XML file node extensions, which it looks like you're already done). I did my best to understand your problem. I hope this helps. By the way, check out the learning hub for more info.