Should Intra/Interclass UOM configuration done before on-hand conversion

Summary:

Should Intra/Interclass UOM configuration done before on-hand conversion ?

Content (required):

I want to understand if Intra and Interclass configuration should be done before loading on-hand quantity ? What is recommended approach ?

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):