Hi Norm,
There are two types of 'notes' you can store on each and every customer record, or vendor or item or GL account. One is an unlimited memo field where you could write instructions, addresses, contacts or other information that wouldn't change very often. The other is a set of text information that are indexed by date/time and user. So if you have a conversation with a customer and want to keep a record of that, you could enter that here, and also remember the date and time.
If you use Report Master for creating 'quick' exports, then you really ought to look at GridView. It can take any single data file (IC Items, AR customers or transactions, or ANY file) and with a single button click the information is sent directly to Excel. You can also include selection filters and calculated fields.
The Adagio OrderEntry historical files has a purpose of keeping older documents for the purposes of reprinting or restoring. You can search for particular documents but by itself you cannot easily maintain statistical data.
If you want to do statistical analysis of your data, such as which customer bought which item, how much and how often, then Adagio SalesAnalysis is the proper tool for this, or you could use a report writer (Crystal Reports or GridView) against the OrderEntry History files.
And to clarify Andrew's last point: Accpac Plus OE does not know about Adagio data files, meaning if you were to run Day End Processing in Plus, the Adagio historical files would not get updated. Vice versa, Adagio OE does not interface to the Invoice History module, so when running Day End, the necessary retrievals and file updates are not done for IH.
So you'd need to decide what sort of things you want to be able to with your sales history and what tools will do that best for you. With a combination of the re-printing capability of the built-in Adagio OE History, and the statistical reporting of either SalesAnalysis or a reporting tool, is there anything else in Invoice History that you use and require?