QB Issue Resolution:

You would have to show the asset (a positive) and the accum depreciation.  Basically, enter your balance sheet accts.  It should not be negative, though. Normally, you depreciate till it is zero.

Resolution for Issue 'How do I enter a negative fixed asset?' available: Yes (Solved).
Source: Intuit Community forum.

How do I enter a negative fixed asset?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

Support for accum depreciation
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Error Recovery for accum depreciation [Canada]
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