CR2011 Dynamic Parameter does not show list at all

Question

I am upgrading some Crystal Reports from CR 8.5 to 2011.  Some would be better served by using a dynamic parameter to allow the user to select the data for the parameter from the database information.  I have created a dynamic parameter on the Customer ID and set the description to be the customer name.  I have set it to handle multiple values.
When I preview the report in the Crystal designer, I get a text box to type in but not a drop down.  To be clear, I am not talking about the LOV 1000 limit here.  There are only 50 customers in the sample file I am working with.  I tried turning the static parameter into a dynamic one, I deleted the original parameter and created a new one.
In case it matters, the parameter is only used as part of the selection formula and if I enter a proper customer id, it will retrieve the data.  This report has about 7 tables (no stored procedures or views) and a subreport of two tables that is linked to the main report on the customer id.  The parameter is only used on the main report for record selection.  The SQL statement in the main report and subreport did need to be reset when I first opened the report in CR2011 but I did that on both.  I have verified the database and the option to verify on first refresh is checked.  The original parameter did have an imported list of about 3000 customer names.  I tried exporting the CR template to a new file and while the file size changed, the behaviour did not.
When I create a brand new report on two of the tables, including the same customer table, and create the parameter the same way, it shows me the list properly in a dropdown at the prompt stage.
I am not sure where to go here or what else to try.  If anyone has any suggestions, I appreciate the help. TIA, rasinc

Answer 1

Thank for the reply Dell,
I see the logic in adding the extra table and keeping it unlinked and I do know the crazy data that can come up if I use it linked to other tables or use the fields in other parts of the programming.
However, I've now tried it several times, creating the parameter on just the name alone, with the ID alone, etc. and I still only get a text box to type into.
I have made sure the original selection criteria
{customer.Id} = {?Customer}
if from the original table, not the new one, which I assume you expected me to do.
So I decided to run the same report through CR XIR2.  When I update the Set Datasource Location, I am now getting the message
"Invalid Argument provided.
Details: The alias requested 'company', contains a combination of characters which is not considered to be valid"
Company is a table containing information about the main company, not the customers.  The same message pops up for another table as well.
Then I get a message that says:
"Prompting failed with the following error message: 'List of Values failure: fail to get values. [Cause of error: The table company does not exist in the document.]'
Error source: prompt.dll Error code: 0x8004380D"
This appears to be a database access issue but I know the firewalls are not a problem because I can create a new report and get the LOV properly with the same database and same desktop computer.  I can take that report created in CR2011 and use it in CRXI also and get the proper LOV.  Is it possible I am dealing with template corruption because there were so many items imported into the static list before?