Bert ... I started the thread, but am a newbie to FM. Will try to share what I know.
Fidelity will only allow you to download the last 90 days of data, UNLESS you are attempting to download into AND using Quicken - this is based on info I got directly by talking to Fidelity.
I did NOT attempt to download first into Quicken, then export a QIF file from Quicken and then import that QIF file into FM. I did NOT want to try and learn more about Quicken and the brief test that I did do convinced me that this was probably not a foolproof and accurate approach.
Based on your post, I will assume that your Fidelity account had its first transaction say about Sept. 15, 2010. If you want all of your transactions in FM (rather than the modified approach I will describe 2nd which approximates the distributions rcvd) then my approach was and what I suggest is: (It is primarily a lot of manual entry with some cut and paste; I am doing this from memory so my recollection of Fidelity labels and web pages is probably somewhat off yet in the ballpark)
1) On Fidelity website on the main account page that would show the acct # for your IRA and for your taxable accts there is a drop down to the right of the acct #. Click on History.
From drop down on Date from the new web pg displayed click on 2010 3rd quarter. Click radio button ascending and click on display. Now click on download and label the .csv file appropriately.
2) On the History page repeat this process until you have downloaded all files except the 2012 3rd quarter.
3) Open blank Excel spreadsheet (or whatever spreadsheet prog you use). Use data import function and import the first .csv e.g. 2010 3rd quarter which would cover your earliest transactions from Sept. 2010. Continue to import your .csv files to build your transaction history in a spreadsheet,
4) Back at Fidelity created again the 2010 3rd quarter and display it ascending so that you see your earliest transaction in Sept. 2010.
5) Finally you are ready to work with the above raw data with FM, Use the Wizard as you had done to create a new Fidelity portfolio (in case you give up on the approach and simply want to use the original you had done that only has limited history in it). In FM for Setup method choose the last radio button labeled something like Manual. ON next screen enter only one Investment which is the Fidelity money market fund that you have them sweep into and out of for your redemptions and purchases. Approximate the starting cash amount for this investment, OR if you had funded your account at Fidelity by transferring money in then you know exactly the amount, and enter the date for this first transaction for the MM investment. When given the choice in Wizard choose this MM as your default cash acct.
6) Now the manual entry begins: In the new portfolio displayed in FM in the editor, ctrl + n will bring up new investment dialog, Use the Fidelity history web display page, and/or your spreadsheet to create your first investment e.g. 50 shares of XYZ . Use cut and paste wherever possible to save time and/or increase accuracy of data entry. Once you have entered all the data for that quarter, change the history displayed the next more recent quarter and repeat.
7) once you have entered all data upto in my example 2012 3rd quarter, you can stop. Now right click on the name of the Fidelity portfolio in the left pane of the editor and click retrieve transactions - regardless of the date range you put in there e.g. 2010 to 2012 the Fidelity "transaction server" will only give you the most recent 90 days.
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You now need to do some kind of reconcile process with what you see in FM with what you see on the Positions view on the Fidelity website. The default cash acct is the one that in my exp. of doing this with 5 Fidelity portfolios is most likely to be off, and for me it was only off by far less than 1/2% of total cash value. What there were a few small discrepancies in share totals for some investments these were found fairly quickly by seeing that some dividend and re-invest transactions had been entered twice.
Notes: on above. You might find or realize in advance that you do not need the spreadsheet at all that you created from the .csv downloads so you can eliminate that set of steps entirely.
Variation on above - approximate the dividend and re-investments:
Probably 90% of my transactions were div. and re-investments of a core investment. Rather than enter each of these individually, I used the spreadsheet to get the total shares, and total cost for all of the re-invested dividends in a single Investment e.g. XYZ stock or XYZ mutual fund. I then used a pseudo purchase date for this composite transaction that was at about the mid-point of the date range during which these re-investments were happening. This method greatly reduces entry but obviously makes performance calculations somewhat less accurate - for me this was a fine trade off.
Additional note on Fidelity IRA: I think I made a separate post on this above. Fidelity is aware that there website data is inaccurate for mutual fund automatic dividend re-investments as they show these transactions as having zero cost basis rather than the accurate accounting method which is that the cost basis is identical to the cash value of the dividend rcvd. Call Fidelity and have them fix your account and insist on that as I did and they should correct it with a biz week. If you do NOT do this it becomes a real nuisance to reconcile your FM portfolio against what you see on Fidelity website.
All of the above can really be daunting and a nuisance, so please complain to Fidelity that the inability to download all of your transaction history as one single QIF file or one single OFX puts Fidelity far behind the brokerage competition in being a technology and customer friendly place. Fortunately after you do the above, as long as you ask FM to retrieve transactions from Fidelity at least once every 90 days you will not have to do this manual entry game again.
Hopefully this was clear enough for you to be able to follow the instructions. Sorry I could not do any screen captures to make it clearer. Good luck ...