You don't have to deactivate your BASE PACK. Please note that the Subscription Fee on Base Pack is refundable. If you have not punched a single trade during a billing cycle, the subscription for that month will be credited back to your SMP ledger. The Subscription Fee gets carried forward every month till you punch your next trade in the given segment. You may also choose to withdraw the funds from SMP ledger as and when you choose to do so.