If a NetScaler high-availability failover occurs when ICA AppFlow is enabled, the session reliability feature now restores the session. This capability is currently disabled by default and configurable through CLI. The CLI command to enable/disable the feature is:
set ica parameter EnableSRonHAFailover YES/NO
For more information, see https://docs.netscaler.com/en-us/citrix-adc/current-release/ns-ag-appflow-intro-wrapper-con/session-reliablility-on-citrix-adc-ha-pair.html
[From Build 49.16] [#456218, 438710, 547601, 620411]