Yes that's what I am trying to say.
Axis has this loophole.
You saw Swiggy trick of IMPS refund.
On similar mechanism if M&S issues IMPS refund if refund is processed by physical store then it's entirely possible.
Website refund is always automatic and direct card refund.
Even if refund is direct to card without involving IMPS then too I am sure we can get ER.
Because Axis gets the report from M&S online portal if order is delivered or not.
If M&S site does not show refund as we availed it from offline store, then we are getting the points for sure.
This sounds too complicated but, I have dug deeper in this, as once it happened that I did not receive M&S points and had mailed them with invoice details, that was the time I understood how grabdeals works in real.