New fields not holding Import Data


I have created a some new fields to ITMMASTER in order to hold plastic tax required data (1)

I have added them to the screen XITM (2a, b)

I have created an import template ZITMPLAS (3a, b)

When I test ZITMPLAS it pulls through the data from the template (4)

However, the problem is that when you check the record after the import the data isn't there for the new fields. I have tried re validating and have ensured that it can take information manually but I am unsure what to try to amend this bar trying to completely recreate the elements. Which, If I can, I would like to avoid.

Any Help is appreciated.