Leave the concrete in the ground, cut the metal (Line posts & Terminal posts) off flush with the concrete/ground, install matching vinyl fence with standard panel spacing.
The metal posts are typically 16 gauge (~1.3 mm) tubing… walls are thinner than the fencing itself, which is usually somewhere between 11 gauge (~3 mm) and 12 gauge (~2 mm). Depending on how many posts you have, you could easily do this with an angle grinder (cutoff wheel) or reciprocating saw (metal or multi-material blade)
Leave the concrete in the ground, cut the metal (Line posts & Terminal posts) off flush with the concrete/ground, install matching vinyl fence with standard panel spacing.
The metal posts are typically 16 gauge (~1.3 mm) tubing… walls are thinner than the fencing itself, which is usually somewhere between 11 gauge (~3 mm) and 12 gauge (~2 mm). Depending on how many posts you have, you could easily do this with an angle grinder (cutoff wheel) or reciprocating saw (metal or multi-material blade)