Offline conversion uploading, what if my lead value changes
I am starting to use offline conversion uploading using the GCLID. We are collecting leads and I plan to upload on a daily basis, however, the lead value can change. So if I uploaded on day 1 that we sell a lead for $30. Then on day 2 we could sell to another buyer meaning we made $60.
So if I upload the conversions data on day 2 with the new what will happen:
a) $30 (can't be amended)
b) $60 (overwritten)
c) $90 (added with the previous information)
thanks in advance, i have tested this up uploading again but changing the value to $0.01. so far no change.