For the field selections to be passed, the fields and variables should be present in both the Apps.
You need to load the Member_name in App 2 as well. If its a small table/excel, load it as Load Script or create a simple Inline table with values.
You can try loading the particular Member_name QVD (if you have as well, or from the main QVD).
You need to select the desired values in the Member_name field (may be using Triggers, OnOpen or something like that). If you don't want that object to be displayed in sheet, hide it.
Then do the document chaining from App 1 to App 2. the selections. Those will be passed.