US Immigration from Colombia

Received the passport with the visa in it today. Just now. The IV issue date is 25JUL2023 with an expiration date on 30DEC2023..It is an IR1 visa.

Why is it good for only 5 months or so? Too late to call the embassy in Bogota. On the bottom of the visa it states:

212(g) (2) (B)

IV DOCS IN CCD

UPON ENDORSEMENT SERVES AS TEMPORARY I-551 EVIDENCING PERMANENT RESIDENCE FOR 1 YEAR

Any ideas on what this is about?

Today 07/28/2023 we received wife's 797 notice of action that removal of conditions was approved and green card will arrive in 60 days. here is our question we still have the old extension letters for 48 months and expired green card.

can we travel to mexico next week? are we facing reentry issues when we return. It does mention in the letter the following.

congratualation uscis approved your greencard request to remove conditions. you should receive your green card in 60 days. you should not travel outside the united states until you receive your new greencard as you may have difficulty renetering. if you need to travel schedule a visit with local uscis to request an i551 stamp on your passport.

should we travel that is our main question.

Finally! 2 year wait. I have forgotten what the embassy sends you now. My documents and visa in passport. Are there still documents sealed that you carry to the US?

What are these dates about?

Should we wait for the embassy to receive our case before filing this or do we need to fill this out before the interview. I'm reading conflicting information online. Appreciate everyone's guidance and experience.