1. Step 1: reload everything from fact-table more recent then last reload timestamp
Step 2: store most recent timestamp of loaded records in step 1 in a variable
Step 3: load qvd-file and and to where-part that only records that not exists in the records loaded in step 1 are read and add that only records more recent then 2 months are read and concatenate this with step 1
Step 4: Store new qvd-file
2. You don't have to do anything? Just leave it like this.