Cannot move all public folders from Exchange 2019 to public folders in Office 365.

The Exchange 2019 on premise server is in Hybrid mode with Microsoft 365.

After following these articles:

https://learn.microsoft.com/en-us/exchange/collaboration/public-folders/migrate-to-exchange-online?view=exchserver-2019

and this:

https://jaapwesselius.com/2022/11/15/migrating-exchange-2016-public-folders-to-office-365/comment-page-1/

I am experiencing that i have 19 public folders and 1 mailbox for public folder in Exhange 2019 on premise.

When i do the .\Export-ModernPublicFolderStatistics.ps1 On_Prem_Stats.csv i see all the public folders and structures but when i follow this script:

.\ModernPublicFolderToMailboxMapGenerator.ps1 -MailboxSize 50GB -MailboxRecoverableItemSize 15GB -ImportFile On_Prem_Stats.csv -ExportFile PFMapping.csv

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i only see 4 mailboxes appearing which are being migrated to public folders in Exchange.

This is done by this command:

$PFMappings = Import-Csv C:\PFScripts\PFMapping.csv
$PrimaryMailboxName = ($PFMappings | Where-Object FolderPath -eq "\").TargetMailbox
New-Mailbox -HoldForMigration:$True -PublicFolder -IsExcludedFromServingHierarchy:$False $PrimaryMailboxName
($PFMappings | Where-Object TargetMailbox -ne $PrimaryMailboxName).TargetMailbox | Sort-Object -Unique | ForEach-Object { New-Mailbox -PublicFolder -IsExcludedFromServingHierarchy:$False $_}

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There was also a mentioning about the script:

“ModernPublicFolderToMailboxMapGenerator.ps1 script, the PFMapping.csv does not contain all public folders? The larger I set the -Mailbox size parameter, the fewer public folders show in the CSV, and the smaller I set the -Mailbox size parameter, the more public folders show up in the CSV. Confused???”

This is what i am experiencing. How can i succesful migrate all the public folders do Office 365?

I was also trying to export to PST and then import to public folder/pst but in Office 365 i cannot create a public folder, it says:

|Microsoft.Exchange.Data.StoreObjects.ObjectNotFoundException|No active public folder mailboxes were found for organization. This happens when no public folder mailboxes are provisioned or they are provisioned in 'HoldForMigration' mode. If you're not currently performing a migration, create a public folder mailbox. 

But nothing is hold for migration.

What can i do to solve this problem?