We are experiencing a problem here. Since we adopted DHIS2 in 2014, the Ministry of health has changed its reporting tools twice. Yet we also had to import legacy data into the system from as far back as 2008.
The most common change has been change in the dis-aggregation of certain data elements. Say from Male < 15 and > 15yrs to Males <1yr,5-10yrs,11-15ys,and so forth.
In order to be able to have both legacy data,and new data entered into the system, we have developed 2 similar data elements in instances like these but with different dis-aggregations.
Is there a way of keeping only one data element for both legacy data and new data with the different dis aggregations without duplicating data? For analysis purposes this would make both our data elements and indicators constructed from them fewer and more manageable for the users!