AtlasXL to set itemgroup account codes

Good Morning

My Finance Manger has decided to restructure the item code in AX we are reationalising from 125 item codes down to 25.

The window for the system being of line to do this is quite small as we are a 24/7 bussiness.

All of the posting codes on the itemgroup cards are cganging, the new godes in the GL are alll set up allready.

What I would like to do is create an Atlas Journal or send main table item spreas sheet that I can fill in in advance then upload on the night we swich over some thing like this below.

So clear down AX and transactions and create the new item groups manually then use atlas to uplaod the gl account posting codes

This is just a small part of it

Item group Name Unit Profit Loss Issue Receipt Delivery note
APPLES APPLES 999996 999997 999995 999994
APRICOTS APRICOTS 999996 999997 999995 999994
ARTICHOKES ARTICHOKES 999996 999997 999995 999994
ASPARAGUS ASPARAGUS 999996 999997 999995 999994
AUBERGINES AUBERGINES 999996 999997 999995 999994
AVOCADOS AVOCADOS 999996 999997 999995 999994
BAGS COOLBAG/ECOBLANKET 999996 999997 999995 999994
BANANAS BANANAS 999996 999997 999995 999994
BEANS BEANS 999996 999997 999995 999994
BEANSPROUT BEANSPROUT 999996 999997 999995 999994
BEERCIDER BEERCIDER 999996 999997 999995 999994
BEETROOT BEETROOT 999996 999997 999995 999994
BINS BINS 999996 999997 999995 999994
BISCUITS BISCUITS 999996 999997 999995 999994
BLACKBERRI BLACKBERRI 999996 999997 999995 999994