The CVS "Pharmacy" business portion will probably increase cash flow with more people having to use CVS pharmacy.
BUT....
The CVS "Caremark" business portion can now expect a loss of revenue because it is selling fewer health insurance contracts (to one of the largest retailers) which is how they make money.
The way I would see this is:
PBM contracts that are sold to employers are greater generators of cash flow (profit) than the narrow margin for reimbursements on prescriptions, thus CVS "Health" is going to have a decrease in overall profit.