Accounting Post To XERO with full detail summary

We would like to post a summary of customer invoice data by type into Xero instead of a complete summary. For example picking is posted as Total Picking: £ 1000.00.

We would instead like this to be: Picking: 100 x 10p with another line item for Picking: 50 x 5p (for each different sum of picking by picking rate. Additionally we would want this extended to all Postage Costs. Instead of a total, we would like totals by Courier Service ie: Royal Mail 24 Tracked & Signed : 10000 x £5.

In addiiton to the above we would like to post all items raised in Mintsoft Accounts including items with 0 and negative values. Currently the system will ignore items with 0 value, and offset the debit amount by any credits that exist within the unconfirmed invoice.