Using nfXml ( https://github.com/vfpx/nfxml ) and a little knowing of what vfp expects its easy.

Update: consider that maybe you don't need to use xmltocursor at all, since nfXmlRead gives you access to
all your object's properties; once you parse the source xml just by doing " o = nfXmlRead(m.xml) "

xml = getxml()

xmltocursor(m.xml,'products') && will give products as is
browse

*for the good part: ( attributes to cursor: )  , we need an  object that xmltocursor can use: ( an object with rows array  ):

ox = createobject('empty') 

addproperty(ox,'myTable',createobject('empty'))
addproperty(ox.myTable,'tableRows(1)')

* copy attributes object in rows array and create xml from our new object:

oxml = nfXmlRead(m.xml) &&  parse xml to object:

ox.myTable.tableRows(1) = oxml.order._attr_

xml = strconv( nfXmlCreate( ox ) ,11 )


xmltocursor(m.xml,'order')

edit

* show xml:
strtofile(m.xml,'myTable.xml')
modify file myTable.xml nowait

*----------------------------
function getxml
*----------------------------
text to xml noshow pretext 2+4+8

<order Id="458362379" 
MessageId="1701653104" 
RestaurantName="Serez Dondurmacisi, Kartal (Kordonboyu Mah.)" 
RestaurantCatalog="postakip" 
RestaurantCategory="8cb94060-7642-44e4-b18c-720a44349424" 
CustomerName="metin emre" 
CustomerId="5039891" 
CustomerType="3"
PaymentNote="Nakit (nakit ödeme) - Lütfen fis getiriniz." 
OrderTotal="14.00" 
CustomerPhone="3213213212" 
CustomerPhone2="" 
PromoCode="" 
City="postakip" 
Region="deneme semti" 
Organization="" 
Address="zcxvcxzvcxzvcxzvxc" 
AddressDescription="fgdsgfdsgfdsg" 
AddressId="8670d8154e1084e85a590a7e3b7bd6c0" 
PaymentMethodId="1" 
DeliveryTime="2018.06.14 12:55" 
ChangeInTotal="0.00" 
Currency="YSM" OrderNote="">

<product id="3a8647be80e005fad8396ecb3d91a033" 
Name="Keçi Sütlü Maras Dondurmasi (Top)" 
Price="6.00" 
ListPrice="6.00" 
Quantity="1" 
Options="" 
OptionIds="" 
OrderIndex="1" 
ParentIndex="0" 
PromoParentIndex="0" 
ProductOptionId="" />

<product id="d25c6827d792020856e60ceb6aa6e66d" 
Name="Bodrum Mandalinali Dondurma (Top)" 
Price="4.00" 
ListPrice="4.00" 
Quantity="1" 
Options="" 
OptionIds="" 
OrderIndex="2" 
ParentIndex="0" 
PromoParentIndex="0" 
ProductOptionId="" />
<product id="0c23a1fa5b8ee1f73a95dbdf6546e3c0" 
Name="Karadutlu Dondurma (Top)" 
Price="4.00" 
ListPrice="4.00" 
Quantity="1" 
Options="" 
OptionIds="" 
OrderIndex="3" 
ParentIndex="0" 
PromoParentIndex="0" 
ProductOptionId="" />

</order>

endtext

return m.xml