Combine into a single PDF bugs, Acrobat 9

Question

There are a things about using the Combine into a single PDF document that are quite frustrating. Two of them have been the case for a few versions of Acrobat, one just since Acrobat 9.
Firstly, only in Acrobat 9 when dragging files into the combine files window I can't ever drag a document to the bottom of the list. If I try it always jumps to the top and then the only way to move it to the bottom is pressing the 'Move Down' button until it reaches there. Ok when you have a handfull of documets. Annoying when there are 30 or so.
Second, when adding 'Outlook Items' the converter always crashes once it reaches the Outlook item whilst converting all the documents. Obviously you can get around this by converting the document first, then adding it to the list, but it's an extra step you do not need to take when dealing with Word, or Excel documents, etc.
Thirdly, if you do not start by opening a PDF document, then click Combine files (i.e. if you open Acrobat without a document open, then click the 'Combine Files' button, if at any point you open then close another PDF document (say to check it's the correct document before inserting it) it automatically closes all of Acrobat, and you lose all the work you've put in sorting the documents into a correct order, etc.
This third one is by far the most frustrating. A warning dialogue saying "Are you sure you want to cancel combining files" would suffice.

Answer 1

By flattening it now will successfully merge into one file, but now there's a new problem.  There are fields that have responses that go beyond the visible size of the field (so there's a + showing on the field).  When I merge to the single PDF anything beyond the visible field size is not there.  Is there anyway of retaining the ability to scroll the fields?