Line Breaks In Data Imported From Excel

I have imported an Excel spreadsheet into an Access database. In Excel, a line break in a cell is entered by ALT+Enter. After importing my spreadsheet, all my line breaks appear as "□" and the text all runs together (no line breaks) in the table. The "□"s are also printed in reports. I need a way to either (1) make the "□"s appear as line breaks (e.g., by changing some Access property) or to convert the "□"s to something that shows as a line break in an the Access table memo field (e.g., CNTRL+Enter). Can anyone tell me how to make this happen?

I've tried to copy/paste the "□" into the Find/Replace dialog, but nothing appears when I paste. I understand the memo field is unicode, but I have not been able to determine what the "□" character actually is. It is not the same as the only similar squared shaped character I find in the Arial character map (U+25A1: White Square). I can copy and paste the "□", if surrounded by some other text, e.g., "xxx□yyy", into a Notepad document and it shows up as "xxx□yyy". Pasting the same into a Word doc and I get
"xxx
yyy" with the line break properly displayed. I can copy and paste just the □ itself in Notepad.