I am currently utilizing the M plan that includes 4GB data per month. On this plan, I recently received the following: 4 GB - BONUS - 4 GB/MO FOR LIFE. This brings my plan's total data allotment to 8GB per month. I am considering upgrading to the L plan (8GB data per month) after adding my wife to my account recently. Will the 4GB bonus data for life transfer if I upgrade to the L plan? This would bring my total monthly data allotment to 12GB per month.