Azure AD Connect - prevent mass deletion of groups

Again we have the same problem with deleted security groups (change in synchronized containers, one of them have groups synchronized - outside of project, but very, very important groups), so how can we counteract groups deletion?

Maybe I can export last runtime log?

Get-ADSyncRunProfileResult [-RunHistoryId ] [-ConnectorId ] [-RunProfileId ] [-RunNumber ] [-NumberRequested ] [-RunStepDetails] [-StepNumber ] [-WhatIf] [-Confirm] []

Get-ADSyncRunStepResult [-RunHistoryId ] [-StepHistoryId ] [-First] [-StepNumber ] [-WhatIf] [-Confirm] []

Invoke-ADSyncRunProfile -ConnectorName -RunProfileName [-Resume] []



So I must change default synchronization cycles to my own cycles using Invoke-ADSyncRunProfile with imports for and analysis of deletion - I must stop exports to Azure when deletion of groups appear in syncstep, but can I look for waiting deletion in connector space for Azure?

Is there any interface, API? Lithnet module for PowerShell?

ADSync database shrink

We have problem with a huge ADSync database and we are in process of shrinking - we can't do upgrade to new Entra tool, so shrinking loooks like below:
c:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Binn\SQLCMD.exe -S "(localdb)\.\ADSync2019"
(sqlcmd prompt) DBCC shrinkdatabase(ADSync,1);
(sqlcmd prompt) GO

ADSync database statistics

c:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Binn\SQLCMD.exe -S "(localdb)\.\ADSync2019"
(sqlcmd prompt) USE ADSync;
(sqlcmd prompt) EXEC sp_spaceused @updateusage = N'TRUE';
(sqlcmd prompt) GO