WP All Import on "[Plugin: Import any XML or CSV File to WordPress] Looks good, but wasted my time"

I did a test export and import of my new site, with 19 posts, using WP All Import and WP ALL Export.

The content field stuffed up with this (on three lines):
Name
Address
Post Code
becoming this (on one line):
Name Address Post Code

All the posts lost the categories, and tab separations exported with the tab break "|" but imported with "|" replacing the tab break creating one single tab with all combined tab names in it.

Result being: all original categories and tabs were lost.

Obviously all my custom fields were lost too.

Maybe the process is faulty, or maybe the instructions are not clear enough.

When using an Export and Import plugin from the same supplier, I expected a simple export out, a few changes and then import back without too many problems.

This is not a simple one.