I try to find my question but I find nothing

I try to find my question but I find nothing

I try to migrate into NAV several related tables using Data Migration (RIM). But I can do it.
For example, I would like to import G/L Account, Gen. Business and Product Posting Group, General Posting Setup and VAT Posting Setup (3 tables).
But I can do it in easy way. I should import and migrate each table step by step. Because if I upload all tables all together I found that there are error and some data are inconsistent.
Is it true? Or I missed some setup ?
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