Don't risk it! You can soak the parts for over 24h + you can clean all kinds of clear parts! If a coat of paint is fresh it will peel off very quickly and you will be able to minimise the impact on the putty.
Slate Load for Slate Wagons . SM32 16mm
009 SLATE LOAD for Porterhouse Models 2 ton slate wagons (set of 3)
VMS Airbrush Cleaner Pro Acrylic Solution - TC01S - 200ml
Airbrush Cleaner Pro Enamel Solution - 200ml VMS TC02
Decal Set & Soften 2 in 1 30 ml VMS AX09
Black Track Extra - 200ml VMS TC04