Well this is quite an interesting development, isn't it?
Thanks for the update.
First off, a request. The first chart you posted was done in a visual format that was easily read, the second one is very colourful but very hard to decipher. There is also something strange, note the position of Chiron on the chart indicating 12 degrees, while on the aspect table below it is listed at 3 degrees 43.
Secondly, please do remember to insert the south moon's node as well as the north.
Moving on, there is a remarkable correspondence between the two charts, which we might have expected since we are looking at the same job offer. Both have late degrees rising, which would indicate the matter is too late to be judged, but the original chart's MH is now the new chart's ascendent. This can't be just coincidence, they are obviously tied together.
Mars ruled the MH in the earlier chart, and it is now your significator.
You wrote "I am, however, apprehensive about my suitability and ability to make a good impression or 'sell' myself." There was self doubt expressed in this sentence.
So, since then you have made progress in that you are more confident, and in fact mars is exactly trine the cusp of the 2nd house of self values, so if nothing else happens, this has helped you on the path of self recognition and esteem, which goes a long way in applying for a job. A very positive goal achieved.
Having said this, what is mars (you) doing in the chart? Not a lot. Mars makes no aspects, and is not quite in the 6th house of work, although it is in the work sign of virgo.
In the first chart moon was conjunct Uranus (you) in the 3rd, and we now know how that went, the job was unexpectedly removed.
Now, we find Uranus ruling the MH and sitting near the ascendent, and now retrograde, reworking it's previous steps.
Sun in the first chart ruled the employer and was sitting in the 6th, moving towards a square with the moon/uranus conjunction, and it was the employer who held on to the job and abruptly pulled it out of offer. Sun was in 2 degrees.
In the new chart, sun is again in 2 degrees, just into the 6th house of the job, and ruling the 4th of endings. However, this time it exactly opposes Chiron at 3 degrees, indicating this position isn't all you may think it is, it comes with a hidden price to pay.
The 6th house is libra ruled by Venus, who is in the exact degree of the nodes. Venus also squares Saturn, co-ruler of the MH, confirming something about the job is restrictive and onerous. Saturn is also sitting on the south node (see why it's important to enter this in a chart!) indicating a weak position.
Normally an inconjunct aspect in horary would not be considered, but in this case, Venus of the job is inconjunct Neptune/Lilith in the 11th of hopes and wishes, further confirming that something here is not out in the open.
And last, moon. Remarkably enough, it is positioned exactly where mars was in the first chart! Mars represented the MH, now it represents you. In the first chart, mars was exactly trine retrograde Jupiter, now it is the moon in that position that trines direct Jupiter.
Jupiter rules the 9th of studies and law, and the 11th of hopes, wishes and friends.
You never mentioned what type of job field this is, if the significators tie in with that.
Jupiter is in the 8th of other's monies.
So, the ascendent ruler (you) and descendent ruler (employer) as well as 6th ruler (job) do not correspond.
Moon from the 4th does approach a trine with a benevolent strong Jupiter.
Retrograde uranus of the MH on the ascendent makes no aspects.
Part of Fortune opposes Jupiter and squares Neptune. Careful.
If they do offer the job, look very carefully at the fine details before accepting.
In the worst case scenario, this is a positive step towards building up your confidence for the future.