This is becoming a very common request for Luminate users who wish to track all the same information that was previously being recorded through the standard RE/LO plug-in. Installment number is usually something stored in a gift attribute in RE on Recurring/Pledge installments like "Payment 35 of 60" or "Payment 1 of unlimited". Even if just the payment number came though on LO Donations as "35" or "1", then a regex dictionary could prepend "Payment " to the front of the string. This field that long-time LO users previously started using because of RE/LO, is often used as a merge field in many acknowledgment letters to recurring donors. Currently, if no longer using RE/LO, users are having to create & pull a custom csv report from LO and import it manually with a data file through IOM as a work-around.