The System Center Visual Studio Authoring Extensions—VSAE—is an add-in for Visual Studio 2019/2017/2015/2013/2012 (all editions) which provides Lifecycle Management Tools to support Management Pack Authoring.

System.ExpressionFilter module incorrectly process data with Duration type. The module considers that negative duration is greater than positive. As example, this construction returns true but logically it should return false:
<ConditionDetection ID="CD" TypeID="System!System.ExpressionFilter">
<Expression>
<SimpleExpression>
<ValueExpression>
<Value Type="Duration">PT1S</Value>
</ValueExpression>
<Operator>Less</Operator>
<ValueExpression>
<Value Type="Duration">-PT1S</Value>
</ValueExpression>
</SimpleExpression>
</Expression>
</ConditionDetection>

Powershell script removes the specified number Recovery Point from certain Datasource System Center Data Protection Manager (DPM) 2012 R2 without confirm. 
The script depends on DPM: you must have installed DPM console with powershell DataProtectionManager module.