I use imports frequently for creating JE in FE. This does not appear to be available in NXT. Have to switch back and forth between database and NXT.
https://webfiles-sc1.blackbaud.com/files/support/helpfiles/fe/content/fe-import-list.html?
Have you tried the Excel add-on for uploading JE entries?
https://app.blackbaud.com/marketplace/applications/2b3bce1f-6589-499c-919c-c6273ad016a3?envid=p-8WUPlN8x_EOTuI6vpPsKqA&state=eyJmaWx0ZXJzIjpbXSwic29sdXRpb25zIjpbIkZpbmFuY2lhbCBFZGdlIE5YVCJdLCJjYXRlZ29yaWVzIjpbXX0%3D&appdetails-active-tab=overview
You won't be notified about changes to this idea.
https://webfiles-sc1.blackbaud.com/files/support/helpfiles/fe/content/fe-import-list.html?
Have you tried the Excel add-on for uploading JE entries?
https://app.blackbaud.com/marketplace/applications/2b3bce1f-6589-499c-919c-c6273ad016a3?envid=p-8WUPlN8x_EOTuI6vpPsKqA&state=eyJmaWx0ZXJzIjpbXSwic29sdXRpb25zIjpbIkZpbmFuY2lhbCBFZGdlIE5YVCJdLCJjYXRlZ29yaWVzIjpbXX0%3D&appdetails-active-tab=overview