Poser doesn't work well with scaling.

Two options:

Make the scaling permanent:
Export the scaled object.
Re-import it.
Use the SetUp room to modify the joints to match the new object.

You have to do the same with all clothing items, too, of course.
(But you can use the modified joints of the figure as a starting point)

You can re-distribute the modified figure and any clothing if you encode them against the original meshes.

Second option:
DO NOT CONFORM.
Scale the clothing the same way you scaled the figure.
Then pose it the same way you posed the figure.

Finally parent the clothing to the figure, so you can move the figure around without the clothes falling off.

Of course if you re-pose your figure, you have to re-pose your clothing, too.

Both options ae not very "user friendly", so you relly should avoid scaling in Poser.
(Not to mention that scaling usually deforms/breaks a figure's joints)