Tell me I’m full of crap…or not.

I have a 2600 router w/ IOS v12.0.
I had two serial interfaces (1-WICT1DSU, 1 60pin)

I wasn’t using the 60pin so I removed it according to Cisco directions.

It seems as though the configuration from the removed interface then applied to myother card?

Has anyone EVER heard of anything like this?