This shouldn't happen if you merge to a new document, but you can
conditionally place the Company field
eg
{Mergefield Name}{IF{Mergefield Company} <> "" "
{Mergefield Company}"}
{Mergefield Address}

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Graham Mayor - Word MVP
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> At times when I do a merge data from a proceding filed is inserted
> into a label if the field for that label is blank. Example: Row A
> has Microsoft as company name, Rows B C and D have no company name
> but when merged A, B and C all have Microsoft as company name and row
> D does not. Does not always happen and does not happen for all
> records.