Help with importing serialized fields for non-programmer

Hi, I’m a non-technical person having trouble importing the serialized data I exported using the plugin. I am using Ultimate Member and ACF plugins. I did an export of all my users and fields. Now I’m trying to import that data into similar fields. The text data works, but radio buttons and checkboxes are not translating. I’ve checked and double-checked, and the old fields and new fields are identical in UM and ACF. Still, the checkbox data just… gets lost.

This is what gets imported:

a:7:{i:0;s:4:”Bark”;i:1;s:36:”Chase small animals (squirrels/cats)”;i:2;s:4:”Chew”;i:3;s:14:”Get into trash”;i:4;s:4:”Jump”;i:5;s:30:”Play with well socialized dogs”;i:6;s:10:”Steal food”;}

What is exported is a totally empty field. What am I doing wrong? Or is this a bug?