It should just be a simple product change. If they were offering you a SUB for switching, make sure to mention it when you call.
AODFCU 3% Visa ($10K), Amex PRG (NPSL), Amex Blue Cash ($24K), Amex Simply Cash+ ($4K), Amex Business Cash ($22.5K), Discover ($22.7K), Cap 1 Union Plus MC ($2500), Chase FU Visa Sig ($12K), Chase F Visa Sig ($8.3K), Chase CSP Visa Sig($6.5K), FCB/Elan Rewards Visa Sig($15K), Buckle ($1.3K), BofA AAA Rewards ($84.5K), Paypal credit ($10K), BBVA Clearpoints ($7.5K), Cap 1 Savor ($13K), PenFed PCR ($3500), Bank of the West CB MC ($3K), PNC Cash Rewards ($9.5K)
