Moving some apps to sd card apps now not working

Hi
I got a Huddl2 with android 4.4.2 operating system and it allows me through the settings for apps section some installed apps to be moved to sd card like maps me navigation maps games etc, but after doing this they stopped working and then after a restart they disappeared .
any idea why and how can i fix it please or using a file manger to to start them

thanks

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