Utility Services 6.3 Service Packs 1 and 2 do not uninstall cleanly

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PSN027002u - Utility Services 6.3 Service Packs 1 and 2 do not uninstall cleanly, breaking future application of patches/Service Packs.

Products affected
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Avaya Aura® Communication Manager (CM), Release 6.3
Avaya Aura® Solution for Midsize Enterprise, Releases 6.2.2
Avaya Aura® System Platform, Release 6.3.x
S8300 Server
S8800 Server
Common Servers (HP & Dell)

Problem description
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This problem occurs in Avaya Aura® Utility Services Release 6.3 implementations when Service Pack 6.3.1.0.20 or 6.3.2.0.20 is removed.

for complete details, please view: https://downloads.avaya.com/css/P8/documents/100177141

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