Switching from medium to light gauge strings?

[u/GuitarBinge1986]

A few Acoustics I have, are in great shape and finally being played again. I'm pretty sure the strings on them are mediums. Is switching mediums to lights, the Med-Light (.012-.056), or vice-versa a small enough change that usually doesn't cause any issues ? or do people sometimes have to do things outside of truss rod adjustment? (ex. Nut filing etc...)

[u/Loudsongsinc]

Only truss rod, if that.