To reclassify a negative liability account to an asset in Calxa, you can use the Account Tree feature. This allows you to allocate an account to any account type, effectively moving your liability account to the asset side.
However, this process is manual and cannot be automated if the account status changes frequently. You will need to manually adjust the account placement whenever you notice a negative balance that needs reclassification.
Automation for this process is on Calxa's to-do list, but it is not currently available.