What do you mean lost it's programming? Does it no longer start the car?
With the VW option, it'll 1) be the correct key and remote FOB, and 2) it'll actually work. The key is sourced pre-cut from your VIN, and the programming is done via Germany. It's not a case of reading a chip with a 3rd party machine, and attempting to copy it onto another.
Aftermarket alternatives can be hit-and-miss, and vendors tend not to take responsibility if it won't program, or is not the correct frequency for this country.
If it's just a case of the remote not unlocking the car, try a new battery (CR2032), and if that doesn't work, you may be able to just replace the remote part of the key fob, as opposed to the whole thing.
'07 Transporter 1.9 TDI
'01 Beetle 2.0
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