Created attachment 104014 [details]
This is a database that suffers from this problem.

Problem description: 
When changing records of the subform, its subform (second subform) does not change. Controls for the primary-foreign pair do not contain the same value.
Steps to reproduce:
1. Create a form with a main form, create its subform, and create a subform to the subform.
2. Enter data in the main form, subform, and its subform.
3. Change the records of the main form and subform to where the second subform should have data visible.

Current behavior:
The foreign key of the second subform does not have a value that matches the primary key of the first subform.

Expected behavior:
All primary-foreign key pairs should have matching values.

              
Operating System: Debian
Version: 4.3.0.4 release
Last worked in: 4.2.6.2 rc