Export-ContentTypeMapping

# Set content type mapping for Image to Picture
$mappingSettings = Set-ContentTypeMapping -Source Image -Destination Picture

# Add mapping for Video to Movie
$mappingSettings = Set-ContentTypeMapping -MappingSettings $mappingSettings -Source "Video" -Destination "Movie"

# Add mapping for a custom content type and set it to ignore
$mappingSettings = Set-ContentTypeMapping -MappingSettings $mappingSettings -Source "My Custom Content Type" -Ignore

# Export the content type mappings to a specified file
Export-ContentTypeMapping -MappingSettings $mappingSettings -Path "C:\MyMappings\MyContentTypeMappingsFileName"

# Connect to the source and destination sites
$srcSite = Connect-Site -Url "http://myfarm1/sites/mysourcesite"
$dstSite = Connect-Site -Url "http://myfarm1/sites/mydestinationsite"

# Get the source list from the source site
$srcList = Get-List -Name mysrclist -Site $srcSite

# Get the destination list from the destination site
$dstList = Get-List -Name mydstlist -Site $dstSite

# Retrieve content type mappings between the source and destination lists
$mappingSettings = Get-ContentTypeMapping -SourceList $srcList -DestinationList $dstList

# Export the content type mappings to a file
Export-ContentTypeMapping -MappingSettings $mappingSettings -Path "C:\MyMappings\MyContentTypeMappingsFileName"

Export-ContentTypeMapping-MappingSettings <MappingSettings>
[-Path <String>] 
[-Overwrite <SwitchParameter>]