- You make alterations to the membership of the static group, but the 'Last modified' date stamp remains the same - pointing to the date it was created.
As of now, we only support to record created date of static group in column "Last Modified" after updating static group. Because updating static group only update membership, it will not update group rule, so the date when update static group will not be recorded in "Last Modified".
Hence, the current behaviour of the functionality is by-design.
Static group Last modified date , KBA , LOD-SF-PLT-RBP , Role Based Permissions , How To
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