1. Create a new piece of Equipment and enter your last lube inspection mileage by adding the difference.
Then for your Lube Service resets create a new Lube Service Type for each of the Lube Services you used on the equipment and don't give it an interval then change all the previous lube service to that new type that does not have in interval.
So for example if you had a Lube/Service type that was called "5000 Mile" you would create a new one called "5k b4 Odo Replaced". And use that newly created one to replace all the previous entries entries then create 1 new one using the original "5000 mile" that does have an interval.
If, for example, it had been 10 miles between the time the last "5000 mile" lube service was done and the odometer broke then you would enter that that Lube/Service was done at -10. Then fill in the rest of the Lube/Service just like the last one that was done before the Odometer broke, but also add a note explaining what you did or what the entry represents.
Here is a video showing how to do option 3: