I've been shopping over 15 years. Never understood why the MSC (not only this one) but others on Sassie as well will continue to send the list of shops with no changes to pay. If they didn't get taken when you first sent the notification (posting), what makes you think people will come back and take them now at the same crappy pay.
I get sending a notification if you bumped the pay, but sending the list showing which are scheduled and which are available at the same pay doesn't really accomplish anything (IMO). But maybe they are thinking/hoping someone might be available now or changed their mind and hope to "hook" them as the same price.
If I saw the list the first time and didn't want it then, I don't want it now unless something has changed (pay/reimbursement/shorter report/change of scenario/etc).