Is this weird?

Hi I’m an LCSW in NY and I’m currently applying for my MA license. It requires three referrals from other LCSWs that has worked with you, so I asked two friends that i went to grad school with and also worked with. They submitted the referral forms, but added their LMSW licenses, even though they are BOTH LCSWs. I addressed this with them, and they said they don’t add their LCSW licenses to anything that isn’t for their job related. I’m very confused by their responses, and feel like there’s some deeper reason behind their actions but idk! Is there a reason why someone would not add their LCSW number on a referral form?