How To Move a VLOOKUP Table & maintain reference links?

I am using a multi-column table that I wish to move (because it doesn't need to be seen).

The end goal is to have a worksheet that is purely a user interface
... where a few variables can be changed, and the results displayed.
... where the tables and helper cells are moved to another worksheet

For development, all the data, variables, and results, are on one worksheet, and easily visible together.
It is all functioning correctly.

Next phase is to move 'the table and various helper cells' somewhere to the right of the worksheet, so that I can develop the interface.
However, when I move the table, the VLOOKUP formulae lose linkage.

Perhaps I need to name the tables, but on all the web 'VLOOKUP aid' pages, no mention is made of this.

Can anyone advise me on the correct procedure, to allow me to move the table whenever, and wherever I want?