When updating a templated (or host) graph, the item options fields don't persist

Hi,

When updating a templated (or host) graph, the item options fields don't persist. 

1. Navigate to Configuration | Templates
2. Go to Graphs for a template and create a new graph
3. Fill in the item fields, something like this:
4. Go back to the same graph and it looks like this:

The graph will use the changes, but we can't make any updates as then it breaks. Should be fixed