Display values for logical columns with several physical sources

Hi all,
I'm enocuntering some strange behaviour with the values displayed for a column (when we want to add it a as a filter, and in the dialogue box select 'Show All' values).
Basically the logical column is mapped against several physical columns as the base fact table is aggregated to different levels. Additionally, one column in the fact tables has an attribute value, and these vary between the aggregated and non-aggregated table. This is not a problem.
In the production environment, when we display the all values in the filters prompt for this column we are seeing the values being taken from one fact table. Naturally this means that not all the values possible for this column are being shown (i.e. values from the aggregated fact tables are missing). Now in one of our test environment where those fact tabels have additional data loaded, the values are being taken from one of the other fact tables. Unfortunately it is not necessarily the fact table with less data.
My questions are:
a) What dictates which fact table the server will use when the query in Answers doesnt use any dimensions (i.e. we are selecting just this attribute and selecting all the possible values by which it can be filtered)?
b) Is there a way of obtaining all the values from the differente physical columns? I.e. that the display values shows the values of that logical column across all the physical fact tables? Maybe we would need to model that attribute as a logical dimension just for that attribute? Im not really sure this would work, as at the physical level the join between the dimension and fact would still have to go to only one particular fact table.
Any info or help is much appreciated.

Hi,
Aggregate tables exist at physical level and are created by ETL procedures. Although i am aware that the dimension come into play when the application needs to decide which source aggregate table to use, it is not an issue here as in our query we are not involving dimensions. We are selecting just this one columen, and then the filter option on this column, then in the dialogue box we select 'All Choices', only the values from one of the source tables is being shown.
This is not a probelm within reports, i think it is a product limitation in that in that option to list all values a user can filter by, it is not possible to display all the values from the different fact tables to which that column is mapped.
Has anyone else encountered this behaviour?

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Display values for logical columns with several physical sources

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