Moving from Fast Search Server 2010 for SharePoint

Migration from FAST Search Server 2010 for SharePoint

Please refer to the TechNet article: Search-first migration from FAST Search Server for SharePoint 2010 to SharePoint Server 2013
The TechNet article provides guidance around when to use the migration scripts found on the TechNet Gallery: http://gallery.technet.microsoft.com/Search-first-migration-f793dff0

There was a migration presentation at the 2012 SharePoint Conference. See session SP154

In terms of which type of crawled properties mapped to which type of managed properties are migrated to SP2013 using the PS script, below is a table for reference.

Managed Property	Crawled Property	Migrated?	Notes
Custom	OOB	YES
OOB	Custom	YES	Together with the other OOB or custom crawled properties mapped to the Managed Property
N/A	Custom	NO	This can also be referred as unmapped custom crawled property
Custom	Custom	YES
OOB	OOB	NO
Custom	Multiple OOB/Custom	YES	Order is also followed

* OOB means out of the box properties that come with SharePoint right after installing a new farm
* Custom means either those properties that are automatically generated for SharePoint columns, output from a custom pipeline extensibility or any other non-OOB property