If setting up custom export columns for a Table Export, if you choose a field such as Email, and then change it to a Template, it will still export the value of Email rather than the template you create.
The XML it creates is like this:
<column type="template" headertype="fieldlabel" field="Email">
<template>{{Name}}</template>
<label>Test</label>
</column>
If you get rid of the field=“Email” it will work
<column type="template" headertype="fieldlabel" >
<template>{{Name}}</template>
<label>Test</label>
</column>
Hope this can be fixed in a future release.
It seems to work fine if you choose Template without having chosen a Field first.