ADManager ibdata1 data file too big

ADManager ibdata1 data file too big

I have inherited AD Manager Plus which we have a corporate license for. 

The problem at the moment is that the ibdata1 mysql database is about 46Gb big and I would like to shrink this. From a AD Manager Plus point of view, what would be the best way to go about this? Shrinking the existing file or just start with a new databases?

Thanks in advance for the help.

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