Glad you found the situation.
For others reading this, the 'remember report settings' option in the company profile was enabled for this client, and the last time the report was run, 199.99 was used as the starting balance. The ARWININI was not corrupted, but simply the last used value was saved.
These values can be cleared out by simply disabling the 'remember report settings' checkbox, save the change, then go back and trun it on again.
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Regards,
Softrak Tech Support