Symptom:
When using negative date values by creating subtraction from a date in the metric equation user may encounter unexpected results. This is specific to Strategy 10.11 and lower
Steps to Reproduce:
In Strategy Tutorial, the following metric definition was created:

Here we can see the results of adding these negative time date in a grid:

- minus signs are neglected in my case, e.g. value of 'DerMetricMinus1.05' is equal to 'derMetrPlus1.05'
- numbering starts anew after reaching a round number (an integer), e.g. value of 1.05 when formatted as 'Time' will be equal to hat of 0.05, 2.05, 3.05 etc.
- otherwise, decimal values are calculated correctly, e.g. 0.25 (of a day) will be displayed as 6 hours, 0.05 as 1h12min.
Action:
This issue has been addressed in Strategy 11.x. Upgrade to an applicable version to take advantage of this fix.