I’ve had trouble in the past trying to help someone on a DMC with the World tool. I’ve never used it and it doesn’t translate will with the original FAST tool.
But, the time you saw values for floor positions but not in the saved field, that’s what it should look like until you save. (SEL PAR 0 SAVE on a FAST tool)
I usually do the scan from the machine room because it’s easier but as soon as something isn’t right I go to the car top so I can see the LED on the selector. No point running all the way to the top of the LED isn’t solid. When you put the car on the bottom limit, before you start running up the selector status should say SUP and the LED should be on solid. Run nonstop to the top limit, then bump the car down off the limit. If the scan was successful it will level in when you take it off inspect. Then you save and make sure the floor counts move from working value to saved. It’s also possible the selector isn’t counting. You can verify phase A and phase B are changing state with a meter at the selector and you can see if the CLC is seeing phase B change state through a variable.

For the World tool I have picked up a few pointers. When you set eh car on the bottom directional check the pulse count. It should read 4098 or higher. If it's lower the scan will not take. I can't remember if the fix for that is a new aux sensor board or micro board. One other thing with some versions of Dover software and World tool is you have to save the scan twice after you complete it in order for it to save. for the second save don't move the car off the top directional just go thru the steps on the laptop and save it again. When you go back to check the pulse count they are saved. i hope this helps. Let me know.

Also contact World if you still have issues. You purchased their tool they will provide support although may take them a while! a few days sometime unfortunately. They're like MCE that way.

Thanks for the replies. Managed to get it working after another day of trying constantly. I was worried it was a selector component that failed but all is good!

I'm having the same issue but upon reaching the top limit, the selector board light goes out and it doesn't save the pulse count. Also using the World tool and have many times before and never had this happen. Then to make matters worse, the Freedom tool stopped communicating with the CLC, selector and door board for absolutely no apparent reason. Thought maybe the tool went bad but it works fine on the other 2 cars. We did upload the parameters for this car, which I had saved, with no problems.

The reason the car lost parameters was it was down while the valve was replaced, so, can't see that had anything to do with it. Any ideas would be greatly appreciated. Thanks

You do have to bump it down off the limit for it to write the working values of the floor counts.
But if you uploaded the parameters, why do you have to do a hoistway scan?
For troubleshooting the communication, separate the CLC, door, and selector to see which is the problem.

just boggles my mind every time i see someone having an issue with the $4600 DMC1 freedom ware tool or the 6k modul tool...such an easier way and at a fraction of the cost

What is the easier, cheaper way?

I've used the freedom tool many times on DMC's and never had the hoistway pulse count included in the saved parameters.
Also never had to bump the car off the limit for the count to be saved.

I'll try your suggestions tomorrow and I thank you for them.

And ILikeElevs........I'll also ask, what is the easier, cheaper way?

any version of IMS with the DMC tool will work on the DMC1

Use the right tool for the job...see above.