Nesting IEF with entity reference revisions data missing on submit

Problem/Motivation

If you dosen't click IEF update in order with entity reference revisons field, the editing field data maybe missing.

Steps to reproduce

1. Be on Drupal 11.2, IEF 3.0.0-rc21, and entity reference revisions 8.x-1.12
2. Create a block types with entity reference revisions field with reference level as: l1 -> l2 -> l3
3. set field with unlimited number of values
4. Set the field form dispaly with "Inline entity form - Complex" widget
5. Create a content block with mulitp l2/l3 values and save
6. edit the block and open a single IEF form for l2 and l3 under l2
7. click l2 IEF update(submit) button, do not click l3 IEF submit
8. click l1 submit button
9. then the l3 item opening IEF form before is missing.

If you don't click l2 button, click l1 directly , that will be ok.