Adding line number to line breaked events

[FrankSPL]

I'n trying to index complete Cisco switch configuration files. A snipped of such an output look like this:

version 15.2
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
no service dhcp
!
hostname DUMMYHOST
!
boot-start-marker
boot-end-marker
!
logging buffered 32000 informational
no logging console
enable secret 5 xyzxyzxyz
!
username enguser secret 5 xyzxyzxyz
username wuguser secret 5 xyzxyzxyz
aaa new-model

..

!
interface GigabitEthernet0/1
description TEXT1
switchport access vlan 123
switchport mode access
switchport nonegotiate

!
interface GigabitEthernet0/2
description TEXT2
switchport access vlan 222
switchport mode access
switchport nonegotiate

Because I wanted to search later on per interface I breaked the files at the ! into events using:
SHOULD_LINEMERGE=true
BREAK_ONLY_BEFORE=^!

As this works OK, and I can do my searches, there is no way I can show the entire configuration file in its original order.
Because the config file does not contain any timestamps I use:
DATETIME_CONFIG=CURRENT

All events now have the same timestamp. There is no way to sort in back in original order.

Is there any (easy) way to solve this?
Could it be possible to add line number to each event or other meta data to sort it later on?

[yannK]

The answer is no, for the index time.
all the events will have almost the same indextime and _time, therefore the original order will be lost once cut in pieces.

if you want to get the whole configuration in a single event (SHOULD_LINEMERGE=false and MAX_EVENTS=thelongestconfigfilelength ) you could eventually try to break it later in multiple pieces at search time.