migrate document with its meta data from one document library to a folder - sharepoint

Question

I am beginner in sharepoint specially in powershell.
I am trying to move all the documents of a document library from one site to another site inside a folder. but I could just copy the files not metadata whcih come from contenttypes!
$PSSnapin = Add-PsSnapin Microsoft.SharePoint.PowerShell -ErrorAction SilentlyContinue Out-Null
clear
$org = "http://'YYYYY'/sites/XXXX"
$dest = "http://'YYYYY'/sites/XXXX/Subsite"
$orgLibrary = (Get-SPWeb $org).Folders["newdoc1"]
$destLibrary = (Get-SPWeb $dest).Folders["newdoc2"].SubFolders["folder1"]
$destFiles = $destLibrary.Files
foreach ($file in $orgLibrary.Files)
{
$curFile = $file.OpenBinary()
$destURL = $destFiles.Folder.Url + "/" + $file.Name
$destFiles.Add($destURL, $curFile, $true)
}

Answer 1

This one here does just that. Except for modified and created dates, all other fields are brought over.
$web = Get-SPWeb "http://sharepointed.com/"
$list = $web.Lists["Shared Documents"]
$spQuery = New-Object Microsoft.SharePoint.SPQuery
$spQuery.ViewAttributes = "Scope='Recursive'";
$spQuery.RowLimit = 2000
$caml = '<Where><Lt><FieldRef Name="Created" /><Value IncludeTimeValue="TRUE" Type="DateTime">2014-01-01T04:06:45Z</Value></Lt></Where> '
$spQuery.Query = $caml
do
{
$listItems = $list.GetItems($spQuery)
$spQuery.ListItemCollectionPosition = $listItems.ListItemCollectionPosition
$listTotal = $listItems.Count
for ($x=$listTotal-1;$x -ge 0; $x--)
{
try
{
$listItems[$x].CopyTo("http://sharepoint/Docs/Documents/"+ $listItems[$x].name)
Write-Host("DELETED: " + $listItems[$x].name)
$listItems[$x].Recycle()
}
catch
{
Write-Host $_.Exception.ToString()
}
}
}
while ($spQuery.ListItemCollectionPosition -ne $null)
via Ian