Macro To Copy And Paste Auto Filtered Data To Existing Worksheet Below Previous Data

I have been working on a macro that compares a existing list of data to an updated list of data and then either moves any data not on the new list over to a completed tab (followed by deleting the record on the existing sheet), and then adds any items not on the existing sheet, but which appear on the new list, to the existing list.

I have come across a stumbling block, i have managed to identify on the existing list the rows of data that have been removed from the new list and therefore need to be moved over to the completed tab, but when i select the data it selects the header row aswell (which will always remain the same row). Obviously this then pastes the header row aswell, and also i can't seem to get it to paste in the new sheet to the next available row (i.e this will be used daily and i don't won't to overwrite the infor already in the completed tab). the next issue i have is then when i go back to existing sheet to delete the data i just copied across, as the header was initially select this also gets deleted.

The code below, is the complete code, including filtering, copying some forumals etc. The area i am getting stuck on is highlighted in red:

Sub Update()
Dim bottomrow As Long
Dim My_Range As Range
bottomrow = Cells(Rows.Count, "C").End(xlUp).Row
Set My_Range = Range("A1:Y" & bottomrow)

[Code] .....