clear coat frosting

i painted the interior of my tamiya corsair w/ model master enamels,coated w/ future,applied a sludge wash of model master acryl,and clear coated w/ model master clear flat lacquer. no problems. before i joined the halves i washed the outside of fuselage w/ soap & water. after water air dried only the areas where the wash remained (in the recesses & against the ribs,etc.) frosted. everything was fine UNTIL the water touched it & dried. nothing was rushed , all coats had sufficient dry time before the next coat was applied to the best of my knowledge.any similar experiences or ideas?