For Adsolut, there are a couple of steps you have to take in Adsolut before submitting the zip file. Follow the steps in order to make sure the balances are updated accordingly.
Be aware around limitations around the opening balances in Adsolut
The limitations around opening balances are described in the conversion limitations of Adsolut. You can find that article here.
Create a backup via these paths:
NL - Systeembeheer > Backup kantoorbeheer
FR - Gestion du systeme > Backup gestion de bureau
DE - Systemverwaltung > Backup Buroverwaltung
EN - System management > Backup office management
You can find the backup in the location you ran the backup to. The file ends with .zip.