The client had copied the standard SAP Smartform that showed requisition information and added their custom fields, etc. This is pretty normal.

With EhP4 the Requisition History (e.g. when was it put on hold) was moved from the immediate user interface to the Requisition Overview (an overview PDF generated using a Smartform). 

Because the Requisition Overview was now a custom version, it didn't have the updated one from SAP. I had to copy the additions SAP had made for the Requisition History back into the customer version. This involves a lot of Smartform nodes, a table with cells, etc. It's not difficult but is a pain in the bum. To shorten what could be hours of work into about two minutes here's what I did:

1) Select the relevant node (in this case it's a Folder called REQUISITION_HISTORY).

2) Click Utilities -> Download -> Individual Node.

3) Save as XML on your PC.

4) Click Utilities Upload. Select file.

5) Select where you want to put the copy.

6) Right click and select Paste.

I was doing a happy dance when I found that one. I hope you find that one useful.

Cheers, Mark