Just to confirm these are indeed the rules we are using;
“Each skill point you spend on a cross-class skill gets your character ½ rank in that skill. Cross-class skills are skills not found on your character’s class skill list.” 1
“Skill points must be spent according to the class that the multiclass character just advanced in.” 2
“Regardless of whether a skill is purchased as a class skill or a cross-class skill, if it is a class skill for any of your classes, your maximum rank equals your total character level + 3.” 1
2: Player’s Handbook pg. 60.
Is this correct?