I'm working on revising a form built with LiveCycle, and discovered that additional subform instances of a certain section are not kept after saving and reopening the form. The user is able to click Add to include more data. When a user saves the form and opens it again, only the first subform is restored, the others are lost. This Add/Remove setup of subforms is used several times in other areas of the form, but the issue is only occurring in one particular place. I've read through several questions that looked similar to mine, but my form already matched the solutions.
Target version: Acrobat and Adobe Reader 9.1 or later
Preserve scripting changes to form when saved: automatically
It happens sometimes that LCD saves or keep unwanted properties for certain objects... One of those solution may help you..
1. Change the name of the object (subform or row) that have multiple instances.
2. If the previous suggestion does not work, delete the object and recreate it.
Changing the name might be the good solution because sometimes it looks like Adobe is misinterpreting one or multiple objects to be another one in the form with same name. So it takes the properties of the other object in the form.