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Question: DataFrame convert issue

Question:DataFrame convert issue

Christopher2222 5785
csv dataframe
May 20 2018
0

When I import a csv file, (ie. a:=Import("c:/test.csv") the first column is a time stamp column.  So when I use the command a[1] the timestamp column is displayed as well as the next column which is I guess 1.  Similarily a[2] gives timestamp column plus column 3.  So it looks like timestamp column is column 0?  But a[0] gives invalid index error. 

So when I convert(a,Array) the first timestamp column is missing. 

Am I not understanding DataFrames correctly or is Maple not manipulating it correctly.  Perhaps it's some other issue that I'm not understanding.  Any ideas?  Why doesn't that first column appear in the convert but yet shows up in the original?
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