There is a way of doing it.
But please experiment with a small amount of data to understand how fragile this is.
Create collection 1 on page 1 and have three or four default values (initial values).
Copy and paste it into a notepad.
Create collection 2 on page 2 and load your data.
Copy this collection into a notepad also.
You will then be able to compare an xml looking structure.
Now for this to work, the spaces, line breaks and everything else must be identical on every line.
You can then copy over the current values from collection 2 into notepad with collection 1.
(Or the safer option use notepad find and replace function in excel or notepad, but again ensure there is no formatting)
Then copy and paste it and you will get the initial values.
I did this to cross check UK cities and counties and understandably it saved me a lot of time.
Please note that any change in formatting or structure will make copy and paste unusable.
