Forced charge during high home load

[spiral]

Currently on an Octopus free session and have set my battery to do a forced charge. At the same time I have several heavy load items running. What I don't understand is why during this load, the battery discharges to support the grid.
If I go into my forced charge schedule and drop the "stop at" to below my current charge and then to go to "standby" all the power comes from the grid and nothing from the battery so why when it is trying to charge, will it also discharge which seems counter intuitive?

[MaterialBarracuda48]

Best post your work schedule program that you used, or when you do charge, how you program it in.

[spiral]

To give some details to the above. From memory what I saw the house load was ~10KW, 7KW was coming from the grid but 3KW was coming from the battery.
When switched to standby, the whole 10KW was coming from the grid.
Why therefore does the house load of 10KW not all come from the grid plus extra import to charge the battery when on forced charge?
I'll also add that I can't understand how the screenshot shows after charging cut off to be self use because it was definitely standby when I force tweaked the charging cut off soc to 10% to see how it behaved at 10% in order to get the info for this post. I couldn't have seen this difference otherwise.