It depends on what it is you are trying to move. If it is apps, then they will only allow moving to run from the card if you are running "Marshmallow" aka Android 6. If you can upgrade to "Marshmallow" you may gain the option, it depends on if the manufacturer blocks or allows it.
Now some apps will allow you to move them, no matter what version you are running. This may be the case of what you had happening before.