Library changes when offline

[elayas]

Plan

Premium

Country

Device

Motorola Moto E4 Plus

Operating System

Android Nougat

My Question or Issue

Help

When I try to download all of my songs for the first time to play it in offline mode, it works fine but when I reconnect my phone to the internet and turn offline mode off to update my library like add a new album or remove an old one then set the app to offline mode when all of the songs finish downloading and close it, the albums being shown when you relaunch the app is exactly like the first one that I have downloaded and doesn't seem to save the new ones that I have downloaded or remove the ones that I have deleted.