Academy 2 - Assignment 1 - same sha1 entered for two different records

I have followed the walk through and implemented the flow. The flow works as expected but the SHA1 of the previous client information combination is entered for the consecutive records. Please look at the output below. You can see the same SHA1 has been entered into two records. I’m unable to debug this and not sure where I would have gone wrong. Any help would be greatly appreciated.