For an invoice to be split between properties, it is the same as splitting between departments with one key difference, the invoice must sit at the parent level.
Invoice splitting across properties requires a parent level organisation in Purchase Plus. An example of this would be by region:
In this set up, if an invoice is sent to the 'Mantra QLD/NT' group, you can use the [Journal Entries] tab to split the invoice to departments within any child organisation.
The invoice may be sent initially to the property level. In this instance, it can be deleted and re-sent to the Paperless Invoicing Email Address of the parent level or sent to your admin/finance team to have it properly processed.
Find out more here about splitting invoice line items using journal entries.