Hello,

Yes, it shouldn't suppose to be -ve. What is you inventory accounting method?

If you can provide step to reproduce then it will be easier for us to find the cause.

Thank you

Hello,

What do you mean by reproduce ?
Please take care not to loss, damage or change the data.
Please give us a report and guidance to solve the issue ?

Hello,

by reproduce means how can I replicate or get the same issue/error on the demo. If you can give step that will help us rectify the issue otherwise it will be quite difficult. Your site is not access-able here, error 1020.

I don't know the cause yet just suspecting that you are changing the inventory accounting method that could cause such issue.

Thank you