Very good news to hear that you got sorted 
, and from what you say seemingly all still in the same Folder?
By:
You are simply reversing the action of moving them to a new Plane, to exist as separate entities the Sketches must have their own Plane.
If you are happy with having only one ‘Sketch Plane’ [read: Named CP] visible at a time you could stack then all on top of each other like a ‘pack of cards’. However the separation must be maintained to keep the Sketches separate.
In the following the CPs are separated by 1.00mm with the bottom CP raised above the YX Plane by 1.00mm, they are 10mm x 10mm Rectangles.
By the Bottom CP being raised above the XY Plane this enables the the latter to be used for Sketching.
In the following the Sketch on the XY Plane was projected onto Plane 07:
Think of these CPs as being Switches. These switch On or Off the entire area covered by the primary plane [in this case XY], at their specific designated level from the XY Plane. However there is a caveat, switching off/hiding the CP does NOT do the same for the Sketch residing on that plane. The Sketch also has to be switched off/hidden as required.
Regarding my above MO. That was conceived to provide a safe and secure means to separate an unusual mass of Sketches. Ongoing you have already realised it is better to be organised and remain organised.
Projection is my choice of relocating Sketches because it is automatic, quick and accurate. Selecting and Moving has to be done properly with care and attention if the process is to be 100%.
Without full details of how you would create a set of CPs for future similar workflow tasks I cannot determine how this would provide improvement. Suffice to say if you NEED 88 separate Planes you will have to create them. Then each Sketch has to be Selected and moved to the chosen CP. As I have no knowledge of the Sketches involved it was reasonable to consider it best to Delete each Sketch after it was properly processed to avoid confusion or repetition.
I have witnessed approximately 5,000 Closed Sketches and they appeared to be simply a ‘pattern’ at a glance. Note that is S3D a Sketch can contain a single Line or Curve or very many more, not an ideal basis for comparison? The object of that particular exercise was to determine how far S3D could be pushed, and IMHO it’s performance was superb.
I will be very interested in your alternative MO, there is always a possibility of improvement.
This is a suggestion for going forward where many Sketches will be involved, when it would seem good practice to set up a ‘stack’ of CPs, as shown above and then:
- Hide them all.
- Sketch on the primary plane and then Project onto a chosen CP.
- Name the CP incorporating the Number if it can be related easily to the Distance above the primary plane. 01 = 1.0mm and so on, if relocating the Sketch is ever necessary this will make moving it precisely very easy. Of course if the metric system is not used this is a tad more tricky.
However the use of the Number can ID both CP and Sketch and making the relationship obvious.
Regarding detail of explanation in my case this has developed out of a need to convey to others what exists, how it can be utilised, how it should be maintained and what the end result could be if established routines were not followed. While at the same time encouraging individual thought and input. This was achieved, in the early days of of ‘home’ computers, by writing a ‘program’ that daily printed out Work Orders for Maintenance Teams. Containing the procedures required for the subject area or equipment with plenty of space for Feedback. Graphics came into my life pre anything 3D and working as a Parts Book Editor-Illustrator most of my work was 2D attempting to masquerade as 3D. S3D is pure luxury.
If you are happy to share the information, by way of feedback. it may be very useful for the wider Community to learn how your iPad has managed to handle this project? E.g., the number of different Sketches and whether the ‘please wait I am working hard’ S3D animated Icon [top centre] as kicked in, and so on.
Bear in mind that all of the above may be subject to change in view of upcoming changes to S3D. But that is a ‘bridge’ I will be happy to cross