I wanted to update you on this issue. Although there still is a problem, I think I may have a more workable solution for you.

You can change your default configuration for your items in Invoices by editing the items to NOT have any decimal places in them for quantities. Although there is no ?toggle? to do this, you simply put in a whole number for the quantities and IN will accept this.

This should give the Designer a consistent field to work with, rather than a conflict because the actual item is consistent with what you are telling the spec code field properties to do with it.

Hope this helps!