Thanks a lot, yes, I need a bit of more details.
A. List item IDs: off the topic, but interesting to know, I can see it from Infopath form, under fields, but no such colum called ID under list settings. Is the ID always automatically generated everytime a new item s added? where is the column named ID hidden?
B: I can get step1 and 2 work. Here s the details for ppl have the same issues as me, set up two DC(data connection), name one as "ID" which is the 2nd DC, only need ID returns. The other one, just use "main data connection", everything returns. Set up the rule when form load, action 1: set a field value: field is the main DC's data field ID, value is the 2nd DC "ID" query field ID at Max. action 2: query for a data on the main DC. At this point, I m able to click on "add new" and bring up a form filled with the most recent item details.
C: Got lost on step3. I think this is the step which let me copy the queried data(the most recent entry) to the new entry. But it ends up I edit on the most recent item and save it, not create a new and copy the most recent one in, edit and save it.
Anything I m missing?
Cheers!