Hi All I currently have a Composite Hierarchy with 3 levels. Cost Centre Division -> Cost Centre Department -> Cost Centre Code I want to insert an additional level in the middle called Cost Centre Grouping so my new Composite Hierarchy would have 4 levels looking like this Cost Centre Division -> Cost Centre Department -> Cost Centre Grouping -> Cost Centre Code. The issue I have is many of my Modules already use Cost Centre Code and have Line Items which look up the Parent using PARENT(ITEM(Cost Centre Code)), when I try to swicth the Parent Hierarchy of Cost Centre Code to now be Cost Centre Grouping instead of Cost Centre Department I get errors as the Line Item formulas are incorrect. Is there a quick was of making this switch without having to temporarily modify all the affected modules and Line Items? Ideally it would be great if you could switch of the model integrity checks allowing you to make all the relevant changes and then commit them and turn on the model integrity check Thanks Paul